Percolation nature of the 60-K to 90-K phase transition in YBa2Cu3O6+δ

被引：5

作者：

Gavrilkin, S. Yu. ^{[1
]}

Ivanenko, O. M. ^{[1
]}

Martovitskii, V. P. ^{[1
]}

Mitsen, K. V. ^{[1
]}

Tsvetkov, A. Yu. ^{[1
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2010年 / 110卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

OXYGEN STOICHIOMETRY; PSEUDOGAP; SUPERCONDUCTORS; ANOMALIES;

D O I：

10.1134/S1063776110050080

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature dependence of the heat capacity of the HTSC YBa2Cu3O6 + delta is measured in the temperature range 1.8-300 K and the doping range 0.70 < delta < 0.86. The results obtained suggest that the transition from the 60-K to the 90-K phase in YBa2Cu3O6 + delta has a percolation nature and that the underdoped 60-K phase represents a heterophase structure in which numerous superconducting clusters are embedded into an insulating matrix.

引用

页码：783 / 787

页数：5

共 11 条

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