Josephson coupling in the vortex-liquid state of Bi2Sr2CaCu2O8+δ with columnar defects

被引：21

作者：

Kosugi, M

Matsuda, Y

Gaifullin, MB

Bulaevskii, LN

Chikumoto, N

Konczykowski, M

Shimoyama, J

Kishio, K

Hirata, K

机构：

[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan

[2] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[3] Int Superconduct Technol Ctr, Superconducting Res Lab, Minato Ku, Tokyo 105, Japan

[4] Ecole Polytech, Solides Irradies Lab, F-91128 Palaiseau, France

[5] Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 113, Japan

[6] Natl Res Inst Metals, Tsukuba, Ibaraki 305, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.59.8970

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interlayer Josephson coupling in the vortex-liquid phase of Bi2Sr2CaCu2O8+delta with columnar defects is studied by means of the Josephson plasma resonance. At high temperatures well above the Bose-glass melting line, double resonance peaks appear as a function of the magnetic field in a narrow temperature range deep within the vortex-liquid state. This indicates that two types of vortex liquid, the well-coupled and the decoupled pancake vortex liquids, appear in the irradiated crystals. The pancake vortices tend to align and couple with increasing magnetic field when it approaches approximately one-third of the matching field. From the angular and frequency dependences of the resonance, we estimate the c-axis correlation length of the pancake vortices quantitatively. [S0163-1829(99)06613-8].

引用

页码：8970 / 8977

页数：8

共 47 条

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