Magnetoresistance in heavily underdoped YBa2Cu3O6+x:: Antiferromagnetic correlations and normal-state transport

被引：39

作者：

Lavrov, AN ^{[1
]}

Ando, Y ^{[1
]}

Segawa, K ^{[1
]}

Takeya, J ^{[1
]}

机构：

[1] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.83.1419

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a contrasting behavior of the in-plane and out-of-plane magnetoresistance (MR) in heavily underdoped antiferromagnetic (AF) YBa2Cu3O6+x (x less than or equal to 0.37). The out-of-plane MR is positive and shows a sharp increase, by about 2 orders of magnitude, upon cooling through the Neel temperature TN A contribution associated with the AF correlations dominates the out-of-plane MR for H \\ c from far above TN, pointing to the key role of spin fluctuations in the out-of-plane transport. In contrast, the transverse in-plane MR [I \\ a(b); H \\ c] appears to be small and smooth through T-N, implying that the development of the AF order has little effect on the in-plane resistivity.

引用

页码：1419 / 1422

页数：4

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