Observation of pseudogap in Bi2Sr2CaCu2O8+delta single crystals with electron tunneling spectroscopy

被引：41

作者：

Tao, HJ

Lu, FR

Wolf, EL

机构：

[1] CHINESE ACAD SCI,INST PHYS,CTR CONDENSED MATTER PHYS,BEIJING 100080,PEOPLES R CHINA

[2] POLYTECH INST NEW YORK,DEPT PHYS,BROOKLYN,NY 11201

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00862-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report electron tunneling evidence for a pseudogap in the normal state excitation spectrum of as-grown Bi2Sr2CaCu2O8+delta (Bi2212) single crystals. The normalized conductance curves show that the gap structure does not disappear at T-c but at much higher temperature T*; the lower bound of T* is within 110 K to 150 K for the investigated three junctions. The result gives a support for the existence of paired carriers in the normal state of cuprate superconductor Bi2212.

引用

页码：1507 / 1508

页数：2

共 4 条

[1] Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors [J].