Raman scattering from single crystal YBa2Cu3O7-delta in a magnetic field

被引：4
作者：
Podobedov, VB
Rice, JP
Weber, A
Drew, HD
机构：
[1] UNIV MARYLAND,DEPT PHYS,COLLEGE PK,MD 20742
[2] RUSSIAN ACAD SCI,INST SPECT,TROITSK 142093,MOSCOW REGION,RUSSIA
来源：
JOURNAL OF SUPERCONDUCTIVITY | 1997年 / 10卷 / 03期
关键词：
YBCO; Raman scattering; magnetic field;
D O I：
10.1007/BF02770552
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A magneto-Raman study of a YBa2Cu3O7-delta single crystal (T-c=92 K) was carried out at a resolution of 2 cm(-1) over the temperature range 5-125 K. At temperatures below T-c we observed a slight narrowing of the 340 cm(-1) Raman mode in a magnetic field of 5.15 T directed parallel to the c-axis of the crystal. The observed magneto-temperature dependences of the Raman continuum intensity measured in the low-frequency region, at ca. 40 cm(-1), indicate contributions of electronic excitations arising from a pair-breaking process. Within the experimental uncertainty, the Raman intensity of the high-frequency continuum was observed to be independent of the magnetic field strength.
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页码：205 / 209
页数：5
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