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  Superconducting density of states and band structure at the surface of the candidate topological superconductor Au2Pb

Martín-Vega, F., Herrera, E., Wu, B., Barrena, V., Mompeán, F., García-Hernández, M., et al. (2022). Superconducting density of states and band structure at the surface of the candidate topological superconductor Au2Pb. Physical Review Research, 4(2): 023241. doi:10.1103/PhysRevResearch.4.023241.

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Genre: Journal Article

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PhysRevResearch.4.023241.pdf (Publisher version), 5MB
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PhysRevResearch.4.023241.pdf
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2022
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© the Author(s), published by the American Physical Society

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https://arxiv.org/abs/2205.07094 (Preprint)
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 Creators:
Martín-Vega, F.1, Author
Herrera, E.1, Author
Wu, B.1, Author
Barrena, V.1, Author
Mompeán, F.2, Author
García-Hernández, M.2, Author
Canfield, P. C.3, Author
Black-Schaffer, A. M.4, Author
Baldovi, J.5, 6, Author           
Guillamón, I.1, Author
Suderow, H.1, Author
Affiliations:
1Laboratorio de Bajas Temperaturas y Altos Campos Magnéticos, Departamento de Física de la Materia Condensada, Instituto Nicolás Cabrera and Condensed Matter Physics Center (IFIMAC), Unidad Asociada UAM-CSIC, Universidad Autónoma de Madrid, ou_persistent22              
2Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Científicas (ICMM-CSIC), Unidad Asociada UAM-CSIC, ou_persistent22              
3Ames Laboratory, Ames and Department of Physics & Astronomy, ou_persistent22              
4Department of Physics and Astronomy, Uppsala University, ou_persistent22              
5Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, ou_persistent22              
6Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              

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Free keywords: Superconductivity
 Abstract: The electronic band structure of Au2Pb has a Dirac cone which gaps when undergoing a structural transition into a low temperature superconducting phase. This suggests that the superconducting phase (Tc=1.1 K) might hold topological properties at the surface. Here we make Scanning Tunneling Microscopy experiments on the surface of superconducting Au2Pb. We measure the superconducting gap and find a sizable superconducting density of states at the Fermi level. We discuss possible origins for this finding in terms of superconductivity induced into surface states.

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Language(s): eng - English
 Dates: 2022-06-062022-03-182022-06-082022-06-27
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevResearch.4.023241
arXiv: 2205.07094
 Degree: -

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Project name : -
Grant ID : 881603
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : -
Grant ID : 751047
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Physical Review Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 4 (2) Sequence Number: 023241 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564