Observation of the low temperature pseudogap in the vortex cores of Bi2Sr2CaCu2O8+δ

被引：302

作者：

Renner, C

Revaz, B

Kadowaki, K

Maggio-Aprile, I

Fischer, O

机构：

[1] Univ Geneva, DPMC, CH-1211 Geneva 4, Switzerland

[2] Univ Tsukuba, Inst Sci Mat, Ibaraki, Osaka 305, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.80.3606

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Vortex cores in under- and overdoped Bi2Sr2CaCu2O8+delta are studied by local probe tunneling spectroscopy. At the center of the cores, we find a gaplike structure at the Fermi level which scales with the superconducting gap, but no quasiparticle bound states. This low temperature pseudogap is intimately related to the superconducting gap and shows striking similarities with the normal slate pseudogap measured above T-c, A possible interpretation is that both pseudogap structures reflect the same "normal" state containing phase incoherent excited pair states.

引用

页码：3606 / 3609

页数：4

共 26 条

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