New features in the vortex phase diagram of YBa2Cu3O7-delta

被引：153

作者：

Deligiannis, K ^{[1
]}

deGroot, PAJ ^{[1
]}

Oussena, M ^{[1
]}

Pinfold, S ^{[1
]}

Langan, R ^{[1
]}

Gagnon, R ^{[1
]}

Taillefer, L ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT PHYS,MONTREAL,PQ H3A 2T8,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.79.2121

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic and transport measurements have been performed in high quality YBa2Cu3O7-delta single crystals. We demonstrate for the first time that the magnetization peak line in the phase diagram of YBa2Cu3O7-delta, H-p(T) exhibits an impressive similarity with the equivalent line for Bi2Sr2CaCu2O8. Our results show not only a similar temperature dependence but also an almost identical response to oxygen doping and a correlation to the multicritical point. At high temperatures we observe a previously unreported splitting of the magnetization peak.

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页码：2121 / 2124

页数：4

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