Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Misochko, Oleg V."'
Suppression of shear ionic motions in bismuth by coupling with large-amplitude internal displacement
Autor:
Ishioka, Kunie, Misochko, Oleg V.
Bismuth, with its rhombohedral crystalline structure and two Raman active phonon modes corresponding to the internal displacement ($A_{1g}$) and shear ($E_{g}$) ionic motions, offers an ideal target for the investigation of the phonon-phonon and elec
Externí odkaz:
http://arxiv.org/abs/2403.10046
Autor:
Han, Yadong, Yu, Junhong, Zhang, Hang, Xu, Fang, Peng, Kunlin, Zhou, Xiaoyuan, Qiao, Liang, Misochko, Oleg V., Nakamura, Kazutaka G., Vanacore, Giovanni M., Hu, Jianbo
Publikováno v:
J. Phys. Chem. Lett. 2022, 13, 442
Layered tin selenide (SnSe) has recently emerged as a high-performance thermoelectric material with the current record for the figure of merit (ZT) observed in the high-temperature Cmcm phase. So far, access of the Cmcm phase has been mainly obtained
Externí odkaz:
http://arxiv.org/abs/2107.01576
The coupling between longitudinal optical (LO) phonons and plasmons plays a fundamental role in determining the performance of doped semiconductor devices. In this work, we report a comparative investigation into the dependence of the coupling on tem
Externí odkaz:
http://arxiv.org/abs/1804.05221
Fully symmetric A1g phonons are expected to play a dominant role in electron scattering in strong topological insulators (TIs), thus limiting the ballistic transport of future electronic devices. Here, we report on femtosecond time-resolved observati
Externí odkaz:
http://arxiv.org/abs/1801.02551
Autor:
Han, Yadong, Liu, Yonggang, Gu, Chun, Zhang, Hang, You, Pengxian, Yang, Jing, Ding, Xiang, Qiao, Liang, Misochko, Oleg V., Hu, Jianbo
Publikováno v:
In Chemical Physics 15 January 2021 541
Femtosecond spectroscopy is applied to study transient electronic and lattice processes in bismuth. Components with relaxation times of 1 ps, 7 ps and ~ 1 ns are detected in the photoinduced reflectivity response of the crystal. To facilitate the ass
Externí odkaz:
http://arxiv.org/abs/1206.7025
Coherent control experiments using a pair of collinear femtosecond laser pulses have been carried out to manipulate longitudinal optical (LO) phonon-plasmon coupled (LOPC) modes in both p- and n-type GaAs. By tuning the interpulse separation, remarka
Externí odkaz:
http://arxiv.org/abs/1108.4234
A coherent two-phonon bound state has been impulsively generated in ZnTe(110) via second-order Raman scattering in the time domain for the first time. The two-phonon bound state, composed of two anticorrelated in wave vector acoustic phonons, exhibit
Externí odkaz:
http://arxiv.org/abs/1011.6115
Publikováno v:
Physics Letters A 375,4141 (2011)
When ultrafast laser pulse strikes the crystal with a van Hove singularity in the phonon density of states, it can create a pair of anti-correlated in wave-vector acoustic phonons. As a result, the atomic fluctuations in either position or momentum b
Externí odkaz:
http://arxiv.org/abs/1011.2001
Publikováno v:
Phys. Rev. B 80, 161207 (2009)
The nature of a phase transition is inherently connected to the changes in the crystalline symmtry, which is typically probed by elastic or inelastic scattering with neutrons, electrons or photons. When such a phase transition is stimulated by light
Externí odkaz:
http://arxiv.org/abs/0902.2115