Tunneling between noncentrosymmetric superconductors with significant spin-orbit splitting studied theoretically within a two-band treatment

2006/05/31 by Kjetil Børkje, K. Børkje, Asle Sudbø +1 · 2 citations
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.74.054506

published as Phys. Rev. B 74, 054506 (2006) · 5 pages, 1 figure. Minor changes. Some new references added. Journal-ref. added

openalex publication_date 2006/08/11 · arxiv created 2006/08/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Tunneling between noncentrosymmetric superconductors with significant spin-orbit splitting is studied theoretically in a two-band treatment of the problem. We find that the critical Josephson current may be modulated by changing the relative angle between the vectors describing absence of inversion symmetry on each side of the junction. The presence of two gaps also results in multiple steps in the quasiparticle current-voltage characteristics. We argue that both these effects may help to determine the pairing states in materials like CePt₃Si, UIr, and Cd₂Re₂O₇. We propose experimental tests of these ideas, including scanning tunneling microscopy.

Citations

• Spin-Orbit Coupling Effects in Zinc Blende Structures
• Order parameter in superconductors with nondegenerate bands

Cited by

• Fractional Flux Quanta at Intrinsic Metallic Interfaces of Noncentrosymmetric Superconductors
• Quantum transport in noncentrosymmetric superconductors and thermodynamics of ferromagnetic superconductors