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Effect of spin-orbit impurity scattering in the superconducting state of t-J model

Toshifumi Yagi·Kazuhiro Kuboki
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Abstract

We study the effect of magnetic impurities in the d_{x^2-y^2}-wave superconducting (SC) state of the two dimensional t-J model.The spin-orbit and the spin-exchange interactions are examined by treating the impurity as a classical spin. The Bogoliubov de Gennes equation derived within a slave-boson mean-field approximation is solved numerically at T = 0. The spin-exchange scattering induces spin-triplet p-wave SC order parameters near the impurity, while a SC state with broken time-reversal symmetry and a spontaneous current appears in the presence of the spin-orbit interaction. When both interactions coexist, it turns out that a state which carries a spontaneous spin current occurs.

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Toshifumi Yagi, Kazuhiro Kuboki. 2000-05-30. Effect of spin-orbit impurity scattering in the superconducting state of t-J model. https://doi.org/10.1143/jpsj.70.1075

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