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  Electronic structure and spatial inhomogeneity of iron-based superconductor FeS

Wang, C., Wang, M., Jiang, J., Yang, H., Yang, L., Shi, W., et al. (2020). Electronic structure and spatial inhomogeneity of iron-based superconductor FeS. Chinese Physics B, 29(4): 047401, pp. 1-6. doi:10.1088/1674-1056/ab75d4.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-777A-C Version Permalink: http://hdl.handle.net/21.11116/0000-0006-777E-8
Genre: Journal Article

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 Creators:
Wang, Chengwei1, Author
Wang, Meixiao1, Author
Jiang, Juan1, Author
Yang, Haifeng1, Author
Yang, Lexian1, Author
Shi, Wujun1, Author
Lai, Xiaofang1, Author
Mo, Sung-Kwan1, Author
Barinov, Alexei1, Author
Yan, Binghai2, Author              
Liu, Zhi1, Author
Huang, Fuqiang1, Author
Jia, Jinfeng1, Author
Liu, Zhongkai1, Author
Chen, Yulin1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              

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Free keywords: Angle-Resolved photoemission with spatially resolution, electronic band structure, ironbased superconductor, scanning tunneling microscopy
 Abstract: Iron-based superconductor family FeX (X = S, Se, Te) has been one of the research foci in physics and material science due to their record-breaking superconducting temperature (FeSe film) and rich physical phenomena. Recently, FeS, the least studied FeX compound (due to the difficulty in synthesizing high quality macroscopic crystals) attracted much attention because of its puzzling superconducting pairing symmetry. In this work, combining scanning tunneling microscopy and angle resolved photoemission spectroscopy (ARPES) with sub-micron spatial resolution, we investigate the intrinsic electronic structures of superconducting FeS from individual single crystalline domains. Unlike FeTe or FeSe, FeS remains identical tetragonal structure from room temperature down to 5 K, and the band structures observed can be well reproduced by our ab-initio calculations. Remarkably, mixed with the 1 × 1 tetragonal metallic phase, we also observe the coexistence of reconstructed insulating phase in the crystal, which not only helps explain the unusual properties of FeS, but also demonstrates the importance of using spatially resolved experimental tools in the study of this compound. © 2020 Chinese Physical Society and IOP Publishing Ltd.

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Language(s): eng - English
 Dates: 2020-02-132020-02-13
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1088/1674-1056/ab75d4
 Degree: -

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Title: Chinese Physics B
  Abbreviation : Chinese Phys. B
Source Genre: Journal
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Publ. Info: Bristol : IOP Publ.
Pages: - Volume / Issue: 29 (4) Sequence Number: 047401 Start / End Page: 1 - 6 Identifier: ISSN: 1674-1056
CoNE: https://pure.mpg.de/cone/journals/resource/1674-1056