PAIR-BREAKING BY SPIN-DISORDER SCATTERING AT THE ANTIFERROMAGNETIC TRANSITION OF THE DY3+ SUBLATTICE OF DYBA2CU3O7-DELTA FILMS

被引：6

作者：

BEAUCHAMP, KM

SPALDING, GC

HUBER, WH

GOLDMAN, AM

机构：

[1] UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455

[2] UNIV MINNESOTA,CTR SCI & APPLICAT SUPERCONDUCTIV,MINNEAPOLIS,MN 55455

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.73.2752

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A peak in the temperature dependence of the resistance of ultrathin, granular DyBa2Cu3O7-δ films has been found near the Néel temperature TN of the Dy3+ sublattice which orders as a 2D Ising antiferromagnet. The shift of the position of the peak to lower temperatures with increasing magnetic field is consistent with it being a signature of TN. These observations are attributed to the suppression of intergranular Josephson coupling by pair breaking, resulting from enhanced intragranular spin-disorder scattering of quasiparticles near the transition. © 1994 The American Physical Society.

引用

页码：2752 / 2755

页数：4

共 25 条

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