Hall anomaly and vortex-lattice melting in superconducting single crystal YBa2Cu3O7-δ

被引：24

作者：

D'Anna, G ^{[1
]}

Berseth, V

Forro, L

Erb, A

Walker, E

机构：

[1] Ecole Polytech Fed Lausanne, Dept Phys, Inst Gen Atom, CH-1015 Lausanne, Switzerland

[2] Univ Geneva, Dept Phys Mat Condensee, CH-1211 Geneva, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.81.2530

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Subnanovolt resolution longitudinal and Hall voltages are measured in an ultrapure YBa2Cu3O7-delta single crystal. The Hall anomaly and the first-order vortex-lattice melting transition are observed simultaneously. Changes in the dynamic behavior of the vortex solid and liquid are correlated with features of the Hall conductivity sigma(xy). With the magnetic field oriented at an angle from the twin boundaries, the Hall conductivity sharply decreases toward large negative values at the vortex-lattice melting transition. [S0031-9007(98)07207-X].

引用

页码：2530 / 2533

页数：4

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