Type-II Ising pairing in few-layer stanene
Spin-orbit coupling has proven indispensable in the realization of topological materials and, more recently, Ising pairing in two-dimensional superconductors. This pairing mechanism relies on inversion symmetry-breaking and sustains anomalously large in-plane polarizing magnetic fields whose upper l...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2020-03, Vol.367 (6485), p.1454-1457 |
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| creator | Falson, Joseph Xu, Yong Liao, Menghan Zang, Yunyi Zhu, Kejing Wang, Chong Zhang, Zetao Liu, Hongchao Duan, Wenhui He, Ke Liu, Haiwen Smet, Jurgen H Zhang, Ding Xue, Qi-Kun |
| description | Spin-orbit coupling has proven indispensable in the realization of topological materials and, more recently, Ising pairing in two-dimensional superconductors. This pairing mechanism relies on inversion symmetry-breaking and sustains anomalously large in-plane polarizing magnetic fields whose upper limit is predicted to diverge at low temperatures. Here, we show that the recently discovered superconductor few-layer stanene, epitaxially strained gray tin (α-Sn), exhibits a distinct type of Ising pairing between carriers residing in bands with different orbital indices near the Γ-point. The bands are split as a result of spin-orbit locking without the participation of inversion symmetry-breaking. The in-plane upper critical field is strongly enhanced at ultralow temperature and reveals the predicted upturn. |
| doi_str_mv | 10.1126/science.aax3873 |
| format | Article |
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This pairing mechanism relies on inversion symmetry-breaking and sustains anomalously large in-plane polarizing magnetic fields whose upper limit is predicted to diverge at low temperatures. Here, we show that the recently discovered superconductor few-layer stanene, epitaxially strained gray tin (α-Sn), exhibits a distinct type of Ising pairing between carriers residing in bands with different orbital indices near the Γ-point. The bands are split as a result of spin-orbit locking without the participation of inversion symmetry-breaking. The in-plane upper critical field is strongly enhanced at ultralow temperature and reveals the predicted upturn.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.aax3873</identifier><identifier>PMID: 32165427</identifier><language>eng</language><publisher>United States: The American Association for the Advancement of Science</publisher><subject>Ising model ; Low temperature ; Magnetic fields ; Molybdenum ; Molybdenum disulfide ; Symmetry ; Tin</subject><ispartof>Science (American Association for the Advancement of Science), 2020-03, Vol.367 (6485), p.1454-1457</ispartof><rights>Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.</rights><rights>Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. 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| fulltext | fulltext |
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| ispartof | Science (American Association for the Advancement of Science), 2020-03, Vol.367 (6485), p.1454-1457 |
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| language | eng |
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| source | Science Magazine |
| subjects | Ising model Low temperature Magnetic fields Molybdenum Molybdenum disulfide Symmetry Tin |
| title | Type-II Ising pairing in few-layer stanene |
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