CORRELATION BETWEEN PLASMA FREQUENCY AND SUPERCONDUCTING TRANSITION-TEMPERATURE IN YBA2CU3OY

被引：53

作者：

TAJIMA, S ^{[1
]}

NAKAHASHI, T ^{[1
]}

UCHIDA, S ^{[1
]}

TANAKA, S ^{[1
]}

机构：

[1] TOKAI UNIV,DEPT PHYS,HIRATSUKA,KANAGAWA 25912,JAPAN

来源：

PHYSICA C | 1988年 / 156卷 / 01期

关键词：

Ceramic Materials - Oxides;

D O I：

10.1016/0921-4534(88)90110-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The plasma reflectivity spectra of YBa2Cu3Oy were measured for oxygen content y. It was found that the plasma edge shifts towards lower energy with decreasing oxygen content y, hence with decreasing Tc. This result is discussed, together with the result on the Hall coefficient, based on the Mott-Hubbard and the Fermi liquid picture. It turns out that the latter is appropriate to explain the plasmon behavior in the oxide superconductors. Comparing the plasma frequencies ωp of other oxide superconductors, we find the linear relation between ω2p and Tc, which cannot be explained by the BCS-theory.

引用

页码：90 / 96

页数：7

共 17 条

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