Temperature and doping dependence of the Bi2.1Sr1.9CaCu2O8+δ pseudogap and superconducting gap

被引：71

作者：

Matsuda, A ^{[1
]}

Sugita, S ^{[1
]}

Watanabe, T ^{[1
]}

机构：

[1] NTT, Basic Res Labs, Atsugi, Kanagawa 24301, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.60.1377

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The temperature and doping dependence of Bi2.1Sr1.9CaCu2O8+delta vacuum tunneling spectra was measured. The tunneling spectra show a clear gaplike feature for almost all the measured temperatures (10-300 K) and doping levels [overdoped (T(c)similar to 80 K) to underdoped (T(c)similar to 80 K), via optimum-doped (T(c)similar to 90 K)]. The superconducting gap structure below T-c develops into a pseudogap above T-c. The model analysis based on the BCS-type density of states showed a sudden increase in the gap value and inelastic scattering rate at T-c. [S0163-1829(99)14825-2].

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页码：1377 / 1381

页数：5

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