ライフサイエンスコーパス: phonon

1 can be ascribed only to an oxygen-breathing phonon.

2 a minimum thermal occupancy of 0.19 +/- 0.01 phonons.

3 of RMLs owing to the dominance of incoherent phonons.

4 lations exceeds that of longitudinal-optical phonons.

5 ons of superconductivity and certain lattice phonons.

6 ence of scattering from acoustic and optical phonons.

7 nd detection mechanisms of coherent polar TO phonons.

8 The notion of a quasiparticle, such as a phonon, a roton or a magnon, is used in modern condensed

9 onon interactions, plasmons, polarons, and a phonon analog of the vacuum Rabi splitting in atomic sys

10 igh alignment degrees of nanotube facilitate phonon and charge transport in the composites.

11 Strong coupling between discrete phonon and continuous electron-hole pair excitations can

12 For this biaxial crystal, which has phonon and electromagnon absorption, the polarization ei

13 r strong coupling between an infrared-active phonon and electronic transitions near the Weyl points t

14 tion bands that are assigned to one- and two-phonon and impurity-related absorption processes.

15 ural transition and significant softening of phonons and gentle variation of carrier concentration co

16 lator ribbons accounting for scattering with phonons and imperfections.

17 position fluctuation, effectively scattering phonons and improving the power factor.

18 electron scattering with discrete terahertz phonons and intermediate binding energy of approximately

19 For the phonons and plasmons, their OAM are carried by the elect

20 es (SL) can lead to localization of coherent phonons and thereby reduces the lattice thermal conducti

21 ch electronic transitions strongly couple to phonons and vibrations, such as energy transfer in photo

22 peratures in a unique interplay of excitons, phonons, and plasmons at the nanoscale.

23 n modes with OAM are derived, i.e., photons, phonons, and plasmons.

24 moelectric matrix we achieve dual control of phonon- and electron-transport properties.

25 uency dependence in dielectric response, and phonon anomalies.

26 Magnons and phonons are fundamental quasiparticles in a solid and ca

27 Despite the anisotropy, phonons are predominantly scattered by Umklapp processes

28 coupling between FeSe electrons and the STO phonons are responsible for the enhancement of Tc over o

29 t from coupling between photons and acoustic phonons-are exceedingly weak in conventional nanophotoni

30 formation of many-body condensate of optical phonons around resonant defects.

31 an additional scattering source for optical phonons as well as for charge carriers.

32 lation functions in an interacting system of phonons as well as the quantum discord between distinct

33 ve at scattering the remaining mid-frequency phonons as well.

34 mass density increase endowing the flexural phonons, as they move with their group velocity, with re

35 Furthermore, this phonon-assisted dynamical behaviour shows great sensitiv

36 hese observations are consistent with a slow phonon-assisted recombination pathway via the indirect b

37 ffective photoluminescence quenching through phonon-assisted relaxation.

38 Fourier analysis identifies active phonons at approximately 100 and 300 wavenumbers pertain

39 nteractions, due to the high transmission of phonons at grain boundaries, and thus improvements in ZT

40 quantum control and measurement on gigahertz phonons at the single-quantum level.

41 and higher and temperatures above 14 K, and phonon backscattering, as manifested in the classical si

42 nding carbon atoms, and the discrepancies of phonon bands between carbon atoms are responsible for th

43 that atomic mass modifications influence the phonon bands of bonding carbon atoms, and the discrepanc

44 either nonlinear optics of a normal gas or a phonon-based condensed matter Bogoliubov theory.

45 perlattice with an electron-transmitting but phonon-blocking structure has emerged as a promising fle

46 s combined with exact solution of linearized phonon Boltzmann equation.

47 Hence, the multiple phonon branches provide a consistent account of our data

48 le interfaces and few-period SLs through the phonon "bridge" mechanism, while it substantially reduce

49 In addition, scattering of mid-frequency phonons by dense dislocations, localized at the grain bo

50 antly impacted the understanding of acoustic phonons by enabling their direct study with x-rays.

51 lly focus on the scattering of low-frequency phonons by interfaces and high-frequency phonons by poin

52 ncy phonons by interfaces and high-frequency phonons by point defects.

53 dicate both are dynamically stable; electron phonon calculations coupled to Bardeen-Cooper-Schrieffer

54 Phonon calculations indicate both are dynamically stable

55 In addition, Gamma-point phonon calculations were performed in order to check the

56 idate our predictions for 19 compounds using phonon calculations, among which 17 have noncentrosymmet

57 thermal boundary conductance, where optical phonons can considerably enhance the conductance in a pr

58 Phonons can display both wave-like and particle-like beh

59 transport of sound and heat, in the form of phonons, can be limited by disorder-induced scattering.

60 with the counterintuitive assignment of the phonon closer to the K point in the KM direction (outer

61 We conclude phonon coherence is unimportant for thermal transport in

62 e kappa l of many-period SLs by breaking the phonon coherence.

63 The phonon confinement effects result in a decrease in the p

64 that such bands arise from distinct acoustic phonons, connecting different valley states.

65 Our hydrodynamic bound allows phonon contributions to diffusion constants, including t

66 critical role in suppressing short-range and phonon contributions to scattering.

67 s phase transformations, strong longitudinal phonon cooling effect on the molten COD wave front, and

68 The inferred electron-phonon "cooling power spectrum" exhibits sharp peaks whe

69 We investigate the influence of optical phonon coupling across interfaces comprised of different

70 Given that the electron-phonon coupling affects superconductivity exponentially,

71 Our results suggest that strong electron-phonon coupling and its dramatic change should be incorp

72 As, besides demonstrating important electron-phonon coupling effects in the GHz frequency domain, sho

73 ctron-electron correlations enhance electron-phonon coupling in iron selenide (FeSe) and related pnic

74 The electron-phonon coupling in these phases results from the motions

75 the question of whether such strong electron-phonon coupling is realized in cuprates.

76 and low phonon frequencies and good electron-phonon coupling leads to reasonably high calculated supe

77 teraction is the dominant source of electron-phonon coupling near room temperature, with scattering o

78 w Raman exponents arise from the unique spin-phonon coupling of isolated [Ln(Cp(ttt))2](+) cations.

79 ives from exciton fine structure and exciton-phonon coupling rather than broadening caused by the siz

80 Here we show that the electron-phonon coupling strength in FeSe can be quantified by co

81 hich is a manifestation of increased plasmon-phonon coupling strength.

82 Controlling the spin-phonon coupling through ligand design thus appears vital

83 nanostructure, limiting our understanding of phonon coupling with photons and plasmons.

84 quintuples which exhibited a strong electron-phonon coupling, and (ii) non-integer number of quintupl

85 originates from non-adiabatic polar electron-phonon coupling, and occurs when the frequency of plasma

86 n between ligand coordination modes and spin-phonon coupling, and therefore we propose that the exclu

87 uperconducting T c for pair-forming electron-phonon coupling.

88 onal superconductivity is caused by electron-phonon coupling.

89 quantum dynamics based on tailorable photon-phonon coupling.

90 We identified the band gap Eg and phonon cut-off frequency omegamax as the two most releva

91 The phonon-defect interactions are temperature dependent and

92 ecular dynamics simulations and quantitative phonon-defect scattering rate analysis, where the behavi

93 Phonon density of states, entropy and melting temperatur

94 y along the nanowire axis and changes in the phonon density of states.

95 her side of the interface, whereas, acoustic phonons directly coupling with high frequency optical ph

96 nce-reduced Monte Carlo method with the full phonon dispersion and intrinsic lifetimes from first-pri

97 observation of Kohn anomalies in the surface phonon dispersion curves of a 50 nm thick Bi2Te3 film on

98 on directly determines floppy edge modes and phonon dispersion.

99 We demonstrate that these intrinsic forms of phonon dissipation are greatly reduced (by >90%) by nonl

100 It is revealed that acoustic phonons dominate the thermal transport, rather than opti

101 from incoherent-phonon-dominated to coherent-phonon-dominated heat conduction in SLs when the number

102 ifestation of the transition from incoherent-phonon-dominated to coherent-phonon-dominated heat condu

103 en for surface electrons, both diffusion and phonon drag contributions are essential for the hole sur

104 n in the many known framework materials with phonon-driven negative thermal expansion.

105 e the thermal transport, rather than optical phonons due to sub-picosecond lifetimes.

106 We investigate the possibility of changing phonon dynamics by altering the crystal through acid etc

107 quantum information processing and coherent phonon dynamics in semiconductor nanostructures.

108 esent an important step towards engineerable phonon dynamics on demand and the use of glasses as low-

109 the impact of mesoscale heterogeneity on the phonon dynamics.

110 roperties at the individual crystal level on phonon dynamics.

111 volume, which will significantly impact the phonon dynamics.

112 Phonon-electron interaction is analyzed by finding the p

113 Consistent physical assumptions about the phonon-electron scattering mechanisms are proposed in or

114 in sensitivity, we visualized and controlled phonon emission from individual atomic-scale defects in

115 molecular states can enter the chain through phonon emission or absorption.

116 By studying acoustic phonon emissions from individual microcracking events we

117 at graphene's edges, switchable atomic-scale phonon emitters provide the dominant dissipation mechani

118 d, as with standard semiconductors, both the phonon energy and electronic bandgap varied with the bor

119 with the strong broadband absorption and low-phonon-energy crystalline environment of semiconductors

120 e by reexamining records of emitted acoustic phonon events during rock mechanics experiments under we

121 f up to 42 trapped ions, by tracing a single phonon excitation through interferometric measurements o

122 ctron interaction is analyzed by finding the phonon features involved in the process as depending upo

123 transparency window with optically generated phonon fields of modest (nW) powers.

124 rature dependent and involve the trapping of phonons for meaningful lengths of time in defect-related

125 = 1 atm and the combination of high and low phonon frequencies and good electron-phonon coupling lea

126 nsity variation and oscillation at twice the phonon frequency for the valence bands are observed at t

127 tosecond coherent lattice motion at a single phonon frequency, and photoemission monitors the subsequ

128 We argue that the phonon gap signifies the formation of short-lived nanome

129 formation potentials using coherent acoustic phonons generated by femtosecond laser pulses.

130 uted to the squeeze of weighted phase-spaces phonons get emitted or absorbed.

131 lectronic pseudogaps offers an avenue to new phonon glass-electron crystal materials.

132 superior aspects include band convergence, "phonon-glass electron-crystal", multiscale phonon scatte

133 Coherent lattice vibrations (acoustic phonons) govern thermal transport in crystalline solids

134 However, a poor understanding of phonon grain boundary scattering and its effect on therm

135 finement effects result in a decrease in the phonon group velocity along the nanowire axis and change

136 ics simulations are conducted to investigate phonon heat conduction in SLs and RMLs with lattice impe

137 to resolve the 4D evolution of the acoustic phonons in a single zinc oxide rod with a spatial resolu

138 The phonons in GaN quickly dissipate the energy of photogene

139 ation of spatially confined surface and bulk phonons in nanostructures.

140 ared (mid-IR) plasmons and IR active optical phonons in silicon nitride.

141 Raman process involves different valleys and phonons in the Brillouin zone, and it has not yet been f

142 onally dependent group velocities of optical phonons in the different crystallographic directions.

143 ain orientations), coupling between acoustic phonons in the fcc crystal and optical phonons on the L1

144 refrigerated nuclei, rather than cooling via phonons in the host lattice.

145 l resistance between the different groups of phonons in the substrate.

146 tablishing how charge carriers interact with phonons in these materials is therefore essential for th

147 e potential use of elastic vibrations (i.e., phonons) in information processing, for example, in adva

148 with various other excitations (for example, phonons) in their surroundings and are an ideal platform

149 acterized by a hardening of the A1g coherent phonon, in stark contrast with the softening observed up

150 e developed a method to capture the electron-phonon inelastic energy exchange in real time and have u

151 It is shown that the electron-phonon interaction at a conducting interface between a t

152 ce of the often-neglected effect of electron-phonon interaction on phonon transport in doped semicond

153 e of the main secondary species and electron-phonon interaction plays a fundamental role in their dyn

154 of photogenerated carriers through electron-phonon interaction, resulting in a short exciton lifetim

155 an SrTiO3 placing control on the electron-LO phonon interaction.

156 se materials, despite scattering by electron-phonon interactions, due to the high transmission of pho

157 ures of many-body effects involving electron-phonon interactions, plasmons, polarons, and a phonon an

158 rplay between electron-electron and electron-phonon interactions.

159 Phonon interference patterns with unusually large signal

160 Electron coupling to optical phonons is observed as periodic spectral modulations in

161 irectly coupling with high frequency optical phonons is shown to lower the overall conductance, espec

162 fusivity may suggest that it originates from phonons, its anisotropy is comparable with reported valu

163 Even low charge screening lifts the phonon Kohn anomaly near the K point for graphene encaps

164 raphene film by recovering the long flexural phonon lifetime.

165 model that explores how coherent delocalized phonon-like modes in DNA provide single-stranded "flexib

166 ort the conclusion that coherent delocalized phonon-like modes play an important role in DNA cyclizat

167 The resulting asymmetry in the phonon line shape, conspicuous at low temperatures, dimi

168 ons can induce a pronounced asymmetry in the phonon line shape, known as the Fano resonance.

169 ple that the setup can be used for inelastic phonon line-width measurements.

170 nhancement of two closely spaced defect zero-phonon lines (ZPL).

171 vity typically through either shortening the phonon mean free path or reducing the specific heat.

172 By analyzing phonon mean free paths and lifetimes, we further show th

173 nm, at a length scale that exceeds the grey phonon mean-free path in this material by almost an orde

174 It is also found that the phonon mean-free-paths of BP are rather long (up to 1 mi

175 sing and decay of the spin arise from single-phonon-mediated excitation between orbital branches of t

176 We here predict by ab initio calculations phonon-mediated high-T c superconductivity in hole-doped

177 nic structure coupled with a self-consistent phonon method that takes phonon-phonon interaction and s

178 stence of a thermally excited hybrid plasmon-phonon mode.

179 agnetic resonance mode or an oxygen buckling phonon mode.

180 sence of longitudinal and transverse optical phonon modes and a great similarity of alkylammonium-bas

181 By investigating the phase instability, phonon modes and transport behaviours, not only do we fi

182 While acoustic phonon modes can persist for a similar number of cycles

183 gy and the symmetry of the surface polariton phonon modes depend on the size of the nanocubes, and th

184 hich is attributed to the behavior of the TO phonon modes of B1 and B2 symmetries at low frequencies

185 surrounding water, which is likely to cause phonon modes to be heavily damped and localized.

186 The data show that such phonon modes will be present in all ionic liquids, requi

187 arbon framework that produces high-frequency phonon modes, (ii) a steep-rising electronic density of

188 - and frequency-synchronized dynamics of all phonon modes, and indicates the formation of many-body c

189 rotation) and inhomogeneous (shear) acoustic phonon modes, which are compared to finite element simul

190 ovides controllable access to a multitude of phonon modes.

191 phonon scattering in the presence of surface phonon modes.

192 The fundamental understanding of how phonons move and the physical mechanisms behind nanoscal

193 om temperature, with scattering off acoustic phonons negligible.

194 oom temperature to a fraction of its thermal phonon occupancy.

195 where there is a better overlap of acoustic phonons on either side of the interface, whereas, acoust

196 ustic phonons in the fcc crystal and optical phonons on the L10-side of the interface leads to a high

197 tions, which dominate even in the absence of phonon or impurity scattering.

198 g of electrons into vibrating surface atoms, phonon oscillations can be observed on the atomic scale.

199 his arises from attributes of the LO optical phonon pairing of electrons.

200 the electronic states, creation of coherent phonon pairs, and diffusion of charge carriers - effects

201 generation and read-out of correlated photon-phonon pairs.

202 ference with periodic structures, as well as phonon particle effects including backscattering, the do

203 K with relatively larger contributions from phonon-phonon and electrostatic interactions for T > 110

204 h a self-consistent phonon method that takes phonon-phonon interaction and strong anharmonicity into

205 complished for weakly interacting systems of phonons, photons and electronic Fermi liquids; however,

206 optical losses still plague many approaches, phonon polariton (PhP) materials have demonstrated long

207 ves increased modal splitting of two plasmon-phonon polariton hybrid modes with temperature, which is

208 latforms to verify our predicted effect with phonon-polaritonic hexagonal boron nitride, plasmonic su

209 ge carriers in graphene couple to hyperbolic phonon polaritons (17-19) in the encapsulating layered m

210 tion of confinement and bandwidth offered by phonon polaritons allows for the ability to create highl

211 Phonon polaritons are guided hybrid modes of photons and

212 gonal BN, where the high-momentum hyperbolic phonon polaritons enable efficient near-field energy tra

213 material waveguides, as well as fermions and phonon polaritons in graphene and van der Waals crystals

214 erentially decay by the emission of pairs of phonon polaritons, instead of the previously dominant si

215 onal boron nitride, low-loss infrared-active phonon-polaritons exhibit hyperbolic behaviour for some

216 eveal multiple (up to ten) confined acoustic phonon polarization branches in GaAs nanowires with a di

217 t metric for characterizing and interpreting phonon propagation in nanostructures.

218 aries of Ag layer and asymmetry of LA and TA phonons propagation through interfaces.

219 We measure the acoustic phonon properties and characterize electron-acoustic pho

220 exploring exotic physical phenomena through phonon properties in Weyl semimetals.

221 ults show that the effective radius of these phonon quasi-bound states, the real-space distribution o

222 imply that neither well-defined electron nor phonon quasiparticles are present in this material.

223 erved in experiments should not be caused by phonons reaching 'minimum' mean free paths.

224 a picosecond acoustic technique to probe the phonon resonances in the InSe vdW layered crystal.

225 locity, and scattering of both electrons and phonons saturates a quantum thermal relaxation time [For

226 s area has been achieved mainly by enhancing phonon scattering and consequently decreasing the therma

227 the simulation, we find that the anharmonic phonon scattering and interfacial anharmnic coupling eff

228 superparamagnetic fluctuations; and enhanced phonon scattering as a result of both the magnetic fluct

229 Consequently, weak electron-phonon scattering becomes an advant- age.

230 omes the typical bottleneck of weak electron-phonon scattering by coupling the electrons directly to

231 ped (GeTe)1-2x(GeSe)x(GeS)x is attributed to phonon scattering by entropically driven solid solution

232 Phonon scattering by nanostructures and point defects ha

233 sintering (SPS), which introduce additional phonon scattering centers such as excess solid solution

234 after the binder burnt off became effective phonon scattering centers, leading to low lattice therma

235 tion of Te in GeTe to reduce the kappalat by phonon scattering due to mass fluctuations and point def

236 We also observe a limiting of bulk phonon scattering in the presence of surface phonon mode

237 g is a sensitive probe to study the electron-phonon scattering pathways in crystals.

238 and theoretical transport studies show that phonon scattering plays a significant role in microscopi

239 stalline SiGe alloys with ab-initio electron-phonon scattering rates.

240 "phonon-glass electron-crystal", multiscale phonon scattering, resonant states, anharmonicity, etc.

241 functionalization constrains the cross-plane phonon scattering, which in turn enhances in-plane heat

242 mobility relationship ( T(-4)) and electron-phonon scattering.

243 ffect of the heavy element iodine and strong phonon scattering.

244 roperties and characterize electron-acoustic phonon scattering.

245 rs on timescales of about 300 fs via carrier-phonon scattering.

246 magnon-drag thermopower-as well as enhancing phonon scattering.

247 matrix occurs, which does not participate in phonon scattering.

248 termined from a quantitative analysis of the phonon-scattering properties associated with the modifie

249 g mechanism, wherein strong optical-acoustic phonon scatterings are driven by a mixture of 0D/1D/2D c

250 The atomic forces required for the phonon scheme are highly accurate and derived from the t

251 However, ordinary harmonic phonons should only carry crystal momentum and, while im

252 In this range inter-sub-band phonons show strong damping due to resonant scattering i

253 tration depth of optically-generated surface phonons so as to selectively probe the interface region,

254 h a strongly interacting incoherent electron-phonon "soup" picture characterized by a diffusion const

255 Most phonon spectroscopies are selectively sensitive to eithe

256 The phonon spectrum of h-GST has very dispersive optic branc

257 can always simultaneously open a gap in the phonon spectrum, lock-in all the characteristic symmetri

258 rs are only effective at the extremes of the phonon spectrum.

259 bound states, the real-space distribution of phonon standing wave amplitudes, the scattering phase sh

260 Our calculations show that low energy phonons still transport substantial amounts of heat in t

261 esults identify a new extraordinary electron-phonon superconductor and pave the way for further explo

262 ts illustrate the utility of the directional phonon suppression function, enabling new avenues for sy

263 e introduce a novel concept, the directional phonon suppression function, to unravel boundary-dominat

264 ing the information on the directionality of phonon suppression in this system, we identify a new str

265 theory with shadowing to precisely describe phonon-surface interactions.

266 e guided hybrid modes of photons and optical phonons that can propagate on the surface of a polar die

267 We find that phonons that emerge from the periodicity of the superstr

268 f Tl-rattlers along the c-axis, and acoustic phonons that likely causes the low lattice thermal condu

269 es have largely been based on decreasing the phonon thermal conductivity.

270 efficiently scatter mid- and long-wavelength phonons thus reducing the thermal conductivity.

271 We realize the operations by coupling phonons to an auxiliary two-level system and applying tr

272 The crossover from phonon-, to charged-impurity, limited conduction occurs

273 model is used to analyze the nonequilibrium phonon transport and to derive the intrinsic thermal con

274 ects can effectively manipulate electron and phonon transport at nanometre and mesoscopic length scal

275 erachically suppress coherent and incoherent phonon transport concurrently.

276 e mode-by-mode understanding of electron and phonon transport for improving energy conversion technol

277 ted effect of electron-phonon interaction on phonon transport in doped semiconductors.

278 Based on these calculations, we examine phonon transport in nanocrystalline SiGe alloys with ab-

279 omprehensive physical description of thermal phonon transport in superlattices by solving the Boltzma

280 pose strategies that can suppress incoherent phonon transport in the above random multilayer (RML) st

281 ally demonstrate a path for achieving robust phonon transport in the presence of material disorder, b

282 ally designing thermal systems with tailored phonon transport properties.

283 ork demonstrates the important insights into phonon transport that can be obtained using ab-initio ba

284 h that enables electron transport as well as phonon transport to be manipulated could potentially lea

285 Here, Kim et al. demonstrate chiral phonon transport, disorder suppression and anomalous coo

286 t transfer properties due to the dynamics of phonon transport, which constrain thermal conductivity (

287 ce dynamics together with their influence on phonon-transport is essential to explore and design crys

288 Different theories of phonon tunnelling are not able to describe the observati

289 al conductivity data, we back-calculated the phonon velocities for the vibrational modes.

290 er that scattering from longitudinal optical phonons via the Frohlich interaction is the dominant sou

291 anomeshes has been previously interpreted by phonon wave effects due to interference with periodic st

292 lattice oscillations via nanostructuring and phonon-wave interference has the potential to significan

293 mplex co-existence of excitons, carriers and phonons, where a delayed buildup of excitons under on- a

294 ervalley scattering of electrons by acoustic phonons, which is essential for valley depolarization in

295 ng of molecular jumping rotational modes and phonons, which is established by carrying out high-resol

296 al cooling of clockwise and counterclockwise phonons, while simultaneously suppressing the hidden act

297 en the flexural corrugation and longitudinal phonons whose fast escape leaves behind a 2D-projected m

298 at the phoretic force is due to the flexural phonons, whose flow is known to be ballistic and distanc

299 vibrational coupling is mediated by coherent phonons with low energies.

300 ction electrons, followed by relaxation into phonons within picoseconds, and subsequent diffusion int