Giant surface Edelstein effect in d-wave superconductors

Yuhei Ikeda; Youichi Yanase

doi:10.1103/PhysRevB.102.214510

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Giant surface Edelstein effect in d-wave superconductors

Yuhei Ikeda, Youichi Yanase

DOI 10.1103/PhysRevB.102.214510 · Physical Review B

T1

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Abstract

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

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Formula	Reported Tc (K)	Pressure (GPa)	Type
CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown