二硒化钛中声子软化的X射线研究。
X-ray studies of phonon softening in tise2.
作者信息
Holt M, Zschack P, Hong H, Chou M Y, Chiang T C
机构信息
Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080, USA.
出版信息
Phys Rev Lett. 2001 Apr 23;86(17):3799-802. doi: 10.1103/PhysRevLett.86.3799.
PMID:11329327
Abstract
The charge-density-wave transition in TiSe (2), which results in a commensurate (2x2x2) superlattice at temperatures below approximately 200 K, presumably involves softening of a zone-boundary phonon mode. For the first time, this phonon-softening behavior has been examined over a wide temperature range by synchrotron x-ray thermal diffuse scattering.
摘要
在TiSe₂中的电荷密度波转变，在低于约200K的温度下导致一个相称的（2×2×2）超晶格，大概涉及一个区边界声子模式的软化。首次通过同步加速器X射线热漫散射在很宽的温度范围内研究了这种声子软化行为。
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