Photoinduced changes of reflectivity in single crystals of YBa2Cu3O6.5 (ortho II).
Photoinduced changes of reflectivity in single crystals of YBa2Cu3O6.5 (ortho II).
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DOI：
10.1103/physrevlett.88.137001
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发表时间：
2001-07
影响因子：
8.6
通讯作者：
G. Segrè;N. Gedik;J. Orenstein;D. Bonn;R. Liang;W. Hardy
中科院分区：
文献类型：
--
作者：
G. Segrè;N. Gedik;J. Orenstein;D. Bonn;R. Liang;W. Hardy
我们报告测量的非孪晶单晶YBa2Cu3O6.5的ortho II结构的反射率的光致变化。反射率的瞬态变化的衰减率被发现随温度的降低而迅速减小，并且在T（c）以下，随激光强度的降低而减小。我们解释的衰变过程的热化的波节准粒子，与准粒子对的非弹性散射确定的速率。
We report measurements of the photoinduced change in reflectivity of an untwinned single crystal of YBa2Cu3O6.5 in the ortho II structure. The decay rate of the transient change in reflectivity is found to decrease rapidly with decreasing temperature and, below T(c), with decreasing laser intensity. We interpret the decay as a process of thermalization of antinodal quasiparticles, with a rate determined by inelastic scattering of quasiparticle pairs.