Impurity Induced Polar Kerr Effect in A Chiral p-wave Superconductor

Details Impurity Induced Polar Kerr Effect in A Chiral p-wave Superconductor Impurity Induced Polar Kerr Effect in A Chiral p-wave Superconductor

2008-06-03

arxiv.org/abs/0806.0548v4

Phys. Rev. B 78, 060501(R) (2008)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures, accepted for publication in Phys. Rev. B Rapid Communication

Scientific paper

10.1103/PhysRevB.78.060501

We discuss the polar Kerr effect (PKE) in a chiral p-wave (p_x+i p_y-wave) superconductor. It is found that the off-diagonal component of a current-current correlation function is induced by impurity scattering in the chiral p-wave condensate, and a nonzero Hall conductivity is obtained using the Kubo formula. We estimate the Kerr rotation angle by using this impurity-induced Hall conductivity and compare it with experimental results [Jing Xia et al., Phys. Rev. Lett. 97, 167002 (2006)].

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