Magnetically stable zero-bias anomaly in Andreev contact to the magnetic Weyl semimetal Co3Sn2S2
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 Co3Sn2S2. In addition to the proximity-induced superconductin...
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| Veröffentlicht in: | Europhysics letters 2020-12, Vol.132 (6), p.67002 |
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| creator | Shvetsov, O O Barash, Yu S Egorov, S V Timonina, A V Kolesnikov, N N Deviatov, E V |
| description | 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 Co3Sn2S2. In addition to the proximity-induced superconducting gap, we observe prominent subgap zero-bias anomaly. The anomaly demonstrates an unusual robustness to external magnetic fields: its width is absolutely stable up to the critical field of Nb, while its amplitude exhibits a weak non-monotonous variation. As the promising scenario of emergence of the zero-bias anomaly in transport characteristics, we consider the proximity-induced zero-energy Andreev bound states interfaced with the half-metallic Co3Sn2S2 and influenced by the strong spin-orbit coupling and large Zeeman splitting. |
| doi_str_mv | 10.1209/0295-5075/132/67002 |
| format | Article |
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In addition to the proximity-induced superconducting gap, we observe prominent subgap zero-bias anomaly. The anomaly demonstrates an unusual robustness to external magnetic fields: its width is absolutely stable up to the critical field of Nb, while its amplitude exhibits a weak non-monotonous variation. As the promising scenario of emergence of the zero-bias anomaly in transport characteristics, we consider the proximity-induced zero-energy Andreev bound states interfaced with the half-metallic Co3Sn2S2 and influenced by the strong spin-orbit coupling and large Zeeman splitting.</description><identifier>ISSN: 0295-5075</identifier><identifier>EISSN: 1286-4854</identifier><identifier>DOI: 10.1209/0295-5075/132/67002</identifier><language>eng</language><publisher>Les Ulis: IOP Publishing</publisher><subject>Bias ; Broken symmetry ; Charge reversal ; Charge transport ; Critical field (superconductivity) ; Spin-orbit interactions ; Superconductivity ; Topology ; Transport properties ; Zeeman effect</subject><ispartof>Europhysics letters, 2020-12, Vol.132 (6), p.67002</ispartof><rights>Copyright © 2021 EPLA</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Shvetsov, O O</creatorcontrib><creatorcontrib>Barash, Yu S</creatorcontrib><creatorcontrib>Egorov, S V</creatorcontrib><creatorcontrib>Timonina, A V</creatorcontrib><creatorcontrib>Kolesnikov, N N</creatorcontrib><creatorcontrib>Deviatov, E V</creatorcontrib><title>Magnetically stable zero-bias anomaly in Andreev contact to the magnetic Weyl semimetal Co3Sn2S2</title><title>Europhysics letters</title><description>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 Co3Sn2S2. 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| source | IOP Publishing Journals |
| subjects | Bias Broken symmetry Charge reversal Charge transport Critical field (superconductivity) Spin-orbit interactions Superconductivity Topology Transport properties Zeeman effect |
| title | Magnetically stable zero-bias anomaly in Andreev contact to the magnetic Weyl semimetal Co3Sn2S2 |
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