Underlain by the Ginzburg-Landau theory of a d-wave superconductor with mass anisotropy λ = mx /my, we derived the non-zero subsidiary order parameter induced by an external current. The amplitude of induced s-component depends on the amplitude and direction of the current. The extreme values appear in some specific conditions. Unlike the isotropic case, we find that the current density is not parallel to the wave vector except for λ= 1.
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