Impurity-induced polar Kerr effect in a chiral p-wave superconductor

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Abstract

We discuss the polar Kerr effect in a chiral p-wave (p_x+ip_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 [J.Xia et al., Phys. Rev. Lett. 97, 167002 (2006)].

Journal

  • PHYSICAL REVIEW B

    PHYSICAL REVIEW B 78 (6), 060501-060501, 2008-08

    American Physical Society

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