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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202210940
|2 doi
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|a pubmed24n1180.xml
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|a (DE-627)NLM354268473
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|a (NLM)36921318
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Moore, Robert G
|e verfasserin
|4 aut
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|a Monolayer Superconductivity and Tunable Topological Electronic Structure at the Fe(Te,Se)/Bi2 Te3 Interface
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.06.2023
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|a Date Revised 01.06.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a The interface between 2D topological Dirac states and an s-wave superconductor is expected to support Majorana-bound states (MBS) that can be used for quantum computing applications. Realizing these novel states of matter and their applications requires control over superconductivity and spin-orbit coupling to achieve spin-momentum-locked topological interface states (TIS) which are simultaneously superconducting. While signatures of MBS have been observed in the magnetic vortex cores of bulk FeTe0.55 Se0.45 , inhomogeneity and disorder from doping make these signatures unclear and inconsistent between vortices. Here superconductivity is reported in monolayer (ML) FeTe1-y Sey (Fe(Te,Se)) grown on Bi2 Te3 by molecular beam epitaxy (MBE). Spin and angle-resolved photoemission spectroscopy (SARPES) directly resolve the interfacial spin and electronic structure of Fe(Te,Se)/Bi2 Te3 heterostructures. For y = 0.25, the Fe(Te,Se) electronic structure is found to overlap with the Bi2 Te3 TIS and the desired spin-momentum locking is not observed. In contrast, for y = 0.1, reduced inhomogeneity measured by scanning tunneling microscopy (STM) and a smaller Fe(Te,Se) Fermi surface with clear spin-momentum locking in the topological states are found. Hence, it is demonstrated that the Fe(Te,Se)/Bi2 Te3 system is a highly tunable platform for realizing MBS where reduced doping can improve characteristics important for Majorana interrogation and potential applications
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|a Journal Article
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|a molecular beam epitaxy
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|a monolayer superconductivity
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|a scanning tunneling microscopy
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|a spin and angle resolved photoemission spectroscopy
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|a superconductor
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|a thin film heterostructure
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|a topological superconductor
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|a Lu, Qiangsheng
|e verfasserin
|4 aut
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|a Jeon, Hoyeon
|e verfasserin
|4 aut
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|a Yao, Xiong
|e verfasserin
|4 aut
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| 700 |
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|a Smith, Tyler
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pai, Yun-Yi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chilcote, Michael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Miao, Hu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Okamoto, Satoshi
|e verfasserin
|4 aut
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1 |
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|a Li, An-Ping
|e verfasserin
|4 aut
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|a Oh, Seongshik
|e verfasserin
|4 aut
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|a Brahlek, Matthew
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 22 vom: 07. Juni, Seite e2210940
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:35
|g year:2023
|g number:22
|g day:07
|g month:06
|g pages:e2210940
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| 856 |
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|u http://dx.doi.org/10.1002/adma.202210940
|3 Volltext
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