Magnetic field induced rotation of the d-vector in the spin-triplet superconductor Sr2RuO4

被引：21

作者：

Annett, James F. ^{[1
]}

Gyorffy, B. L. ^{[1
]}

Litak, G. ^{[2
]}

Wysokinski, K. ^{[3
,4
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[2] Tech Univ Lublin, Dept Mech, PL-20618 Lublin, Poland

[3] Marie Curie Sklodowska Univ, Inst Phys, PL-20031 Lublin, Poland

[4] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.78.054511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In zero magnetic field the superconductor Sr2RuO4 is believed to have a chiral spin-triplet pairing state in which the gap function d-vector is aligned along the crystal c axis. Using a phenomenological but orbital specific description of the spin-dependent electron-electron attraction and a realistic quantitative account of the electronic structure in the normal state, we analyze the orientation of the spin-triplet Cooper pair d-vector in response to an external c-axis magnetic field. We show that, for suitable values of the model parameters, a c-axis field of only 20 mT is able to cause a reorientation phase transition of the d-vector from along c to the a plane, in agreement with recent experiments.

引用

页数：6

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