Andreev conductance of a domain wall

2003/03/02 by N. M. Chtchelkatchev, Nikolai M. Chtchelkatchev, I. S. Burmistrov +1
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.68.140501

published as Phys. Rev. B 68, 140501(R) (2003) · 4 pages and 1 figure

arxiv created 2003/03/02 · openalex publication_date 2003/10/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

At low temperatures the transport through a superconductor-ferromagnet (SF) tunnel interface is due to the tunneling of electrons in pairs. The exchange field of a single domain ferromagnet aligns electron spins and suppresses the two-electron tunneling. The presence of the domain walls at the SF interface strongly enhances the subgap current. The Andreev conductance is proved to be proportional to the total length of domain walls at the SF interface when the ferromagnet is fully polarized.

Citations

• Interaction of mesoscopic magnetic textures with superconductors

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