Novel anisotropy in the superconducting gap structure of Bi2Sr2CaCu2O8+δ probed by quasiparticle heat transport -: art. no. 147004

被引：23

作者：

Ando, Y ^{[1
]}

Takeya, J ^{[1
]}

Abe, Y ^{[1
]}

Sun, XF ^{[1
]}

Lavrov, AN ^{[1
]}

机构：

[1] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.88.147004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Since the nature of pairing interactions is manifested in the superconducting gap symmetry, the exact gap structure, particularly any deviation from the simple d(x)2-(y)2 symmetry, would help in elucidating the pairing mechanism in high-T-c cuprates. Anisotropic heat transport measurement in Bi2Sr2CaCu2O8+delta reveals that the quasiparticle populations are different for the two nodal directions and thus the gap structure must be uniquely anisotropic, suggesting that pairing is governed by interactions with a rather complicated anisotropy. Intriguingly, it is found that the plateau in the magnetic-field dependence of the thermal conductivity is observed only in the b-axis transport.

引用

页数：4

共 21 条

[1] Temperature- and magnetic-field-dependent thermal conductivity of pure and Zn-doped Bi2Sr2CaCu2O8+δ single crystals [J].