by saturation-recovery techniques at 8.7 GHz for Cein (LaCe)Mg(NO).24HO-hereafter LMN: Ce-for concentrations x ranging from 2.0 × 10to 1.0, for the magnetic field perpendicular to the crystal c axis, and at 4.2 K, where the resonant two-phonon process dominates and is phonon limited. ...
two-phonon Raman scatteringexcitonic modelsemiconductorexciton dispersionWe have measured two-phonon Raman spectra of InP for laser energies between 1.58 and 2.71 eV. We describe the spectra in terms of an excitonic model in the low energy range, and within a band picture for higher energies. For...
The second order Raman spectrum of NaCl is calculated on the basis of a nonlinear shell model. Good agreement with experimental results is obtained with a two parameter model. The theory is developed to allow for certain of the interactions between the participating phonons and calculations show th...
Special Issue: The 11th International Conference on Phonon Scattering in Condensed Matter (Phonons2004) Volume 1, Issue 11, pages 3118–3121, November 2004 Additional Information How to Cite Semenova, L. and Prokhorov, K. (2004), The analysis of the two-phonon resonant hyper-Raman effect. phy...
Hyperbolic whispering-gallery phonon polaritons in boron nitride nanotubes A Purcell factor as high as 1012is measured in atomically smooth nanocavities of hexagonal boron nitride nanotubes. Xiangdong Guo ,Ning Li &Qing Dai Browse broader subjects ...
Raman scattering is studied in the substoichiometric transition metal carbides. The carbon vacancies in these cubic solids induce a one-phonon spectrum that essentially mirrors the phonon density of states. The superconducting group Vb carbides NbC0.98 and TaC0.99 have one-phonon Raman spectra that sho...
We propose an efficient scheme for the controllable amplification of two-phonon higher-order sidebands in a quadratically coupled optomechanical system. In this scheme, a strong control field and a weak probe pulse are injected into the cavity, and the membrane located at the middle position of ...
phonon dispersion relationsRaman spectratight-binding calculations/ nonadiabatic phonon dispersionmetallic single-walled carbon nanotubes VN Popov,P Lambin - 《Nano Research》 被引量: 4发表: 2010年 Phonon Dispersion Relations and Two‐Phonon Raman Spectra of Cesium Fluoride The phonon dispersion relations...
Tracking the momentum of scattered electrons reveals the temporal evolution of phonon populations on ultrafast timescales, helping to quantify the contributions of the cooperative electronic–lattice order responsible for phase transitions in quantum materials. Charles J. Sayers & Giulio Cerullo Article |...
We found that the uppermost phonon branch has its minimum frequency at the zone center leading to a peak in the two-phonon overtone density-of-states at frequency bigger than twice of the one-phonon Raman frequency. The frequency shift and line shape of the two-phonon peak are compared with...