Spin-lattice relaxation in the mixed state of YBa2Cu3O7-δ and Doppler-shifted d-wave quasiparticles

被引：27

作者：

Wortis, R ^{[1
]}

Berlinsky, AJ ^{[1
]}

Kallin, C ^{[1
]}

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.61.12342

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present calculations of the rate of planar Cu spin lattice relaxation in the mixed state of YBa2Cu3O7-delta due to ii! vortex vibrations and (ii) electron spin-flip scattering. We emphasize that both mechanisms give position-dependent rates due to the presence of vortices, and hence the magnetization recovery is characterized by a distribution of rates. We conclude that relaxation by vortex vibrations is too slow to be a significant factor in this material. Using a semiclassical model of Doppler shifted d-wave quasiparticles with a linear dispersion around the nodes, our calculation of the relaxation rate from electron spin-flip scattering shows partial agreement with experiment.

引用

页码：12342 / 12351

页数：10

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