Giant surface Edelstein effect in $d$-wave superconductors

Abstract

Edelstein effect is useful for electric control of magnetic moment. However, Joule heating created by a dissipative current is harmful for its practical applications. In this paper, we investigate two-dimensional noncentrosymmetric superconductors (NCSs) with either $s$-wave or $d$-wave symmetry, and demonstrate that a surface Edelstein effect is significantly enhanced in $d$-wave NCSs. The origin of the enhancement is attributed to surface Majorana states characteristic of gapless spin-singlet superconductors. In the view of superconducting spintronics, this result would give a route to magnetic domain switching by dissipationless supercurrent. We discuss a possible experimental observation in cuprate superconductor heterostructures and heavy fermion superlattices.

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• Nonlinear Superconducting Magnetoelectric Effect
• Supercurrent-induced topological phase transitions
• Quantum geometry encoded to pair potentials
• Bulk photospin effect: Calculation of electric spin susceptibility to second order in an electric field
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• Supercurrent-Induced Weyl Superconductivity
• Beyond spin-1/2: Multipolar spin-orbit coupling in noncentrosymmetric crystals with time-reversal symmetry