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Magnetically stable zero-bias anomaly in Andreev contact to the magnetic Weyl semimetal Co$_3$Sn$_2$S$_2$ | | O.O. Shvetsov
; Yu.S. Barash
; S.V. Egorov
; A.V. Timonina
; N.N. Kolesnikov
; E.V. Deviatov
; | | Date: |
10 Feb 2020 | | Abstract: | Being encouraged by the interplay between topology, superconductivity and
magnetism, we experimentally investigate charge transport through the interface
between the Nb superconductor and the time-reversal symmetry breaking Weyl
semimetal Co$_3$Sn$_2$S$_2$. In addition to the proximity induced
superconducting gap, we observe several subgap features, among which the most
interesting is the prominent subgap zero-bias anomaly, absolutely stable
against external magnetic fields up to the critical field of Nb. As the
promising scenario for the zero-bias anomaly to appear in transport
characteristics, we consider the proximity induced zero-energy Andreev bound
states interfaced with the half-metallic Co$_3$Sn$_2$S$_2$ and influenced by
the strong spin-orbit coupling and large Zeeman splitting. | | Source: | arXiv, 2002.3709 | | Services: | Forum | Review | PDF | Favorites | |
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