Coupling between phonons and intrinsic Josephson oscillations in cuprate superconductors

被引：58

作者：

Helm, C ^{[1
]}

Preis, C ^{[1
]}

Forsthofer, F ^{[1
]}

Keller, J ^{[1
]}

Schlenga, K ^{[1
]}

Kleiner, R ^{[1
]}

Muller, P ^{[1
]}

机构：

[1] UNIV ERLANGEN NURNBERG,INST PHYS 3,D-91058 ERLANGEN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.79.737

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The recently reported subgap structures in the current-voltage characteristic of intrinsic Josephson junctions in the high-T-c superconductors Tl2Ba2Ca2Cu3O10+delta and Bi2Sr2CaCU2O8+delta are explained by the coupling between c-axis phonons and Josephson oscillations. A model is developed where c-axis lattice vibrations between adjacent superconducting multilayers are excited by the Josephson oscillations in a resistive junction. The voltages of the lowest structures correspond well to the frequencies of longitudinal c-axis phonons with large oscillator strength in the two materials, providing a new measurement technique for this quantity.

引用

页码：737 / 740

页数：4

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