Dynamics of the c-polarized infrared-active modes in La2-xSrxCuO4

被引：40
作者：
Henn, R
Wittlin, A
Cardona, M
Uchida, S
机构：
[1] UNIV TOKYO,SUPERCONDUCTIV RES COURSE,BUNKYO KU,TOKYO 113,JAPAN
[2] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND
来源：
PHYSICAL REVIEW B | 1997年 / 56卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.56.6295
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have studied the c-polarized optical phonons of high quality single crystals of La2-xSrxCuO4 with doping concentrations ranging from the underdoped to the overdoped regime (x=0.1,0.12,0.15,0.18,0.2) at temperatures between 10 and 300 K. We discuss the dependence of all observed phonon modes on temperature as well as on doping. We find no indication for a coupling of the zone-center phonons to the electronic continuum, either in the normal or in the superconducting state.
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页码：6295 / 6301
页数：7
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