Double Josephson plasma resonance in T* phase SmLa1-xSrxCuO4-δ

被引：55

作者：

Shibata, H ^{[1
]}

Yamada, T ^{[1
]}

机构：

[1] NTT, Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.81.3519

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Far-infrared sphere resonance in T*-phase SmLa0.8Sr0.2CuO4-delta powder samples is measured down to 7 cm(-1). Below T-c, two peaks are observed at 11 and 30 cm(-1) for delta = 0.05. Based on a comparison with the ...S/I/S/I'/S/I/S/I'/S... (...superconductor/insulator1/superconductor/insulator2/superconductor...)-type Josephson junction array model discussed by van der Marel and Tsvetkov [(Czech. J. Phys. 46, 3165 (1996)], these peaks are attributed to the Josephson plasma resonances of the intrinsic Josephson junctions at the fluorite-type Sm2O2 block layer and the rocksalt-type (La,Sr)(2)O2-delta block layer, respectively. The relation between the multiple Josephson plasma and the crystal structure of high-T-c cuprates is also discussed.

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页码：3519 / 3522

页数：4

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