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DOI10.1126/science.aan4596
Observation of topological superconductivity on the surface of an iron-based superconductor
Zhang, Peng1; Yaji, Koichiro1; Hashimoto, Takahiro1; Ota, Yuichi1; Kondo, Takeshi1; Okazaki, Kozo1; Wang, Zhijun2; Wen, Jinsheng3,4; Gu, G. D.5; Ding, Hong6,7,8; Shin, Shik1
2018-04-13
发表期刊SCIENCE
ISSN0036-8075
EISSN1095-9203
出版年2018
卷号360期号:6385页码:182-+
文章类型Article
语种英语
国家Japan; USA; Peoples R China
英文摘要

Topological superconductors are predicted to host exotic Majorana states that obey non-Abelian statistics and can be used to implement a topological quantum computer. Most of the proposed topological superconductors are realized in difficult-to-fabricate heterostructures at very low temperatures. By using high-resolution spin-resolved and angle-resolved photoelectron spectroscopy, we find that the iron-based superconductor FeTe1-xSex (x = 0.45; superconducting transition temperature T-c = 14.5 kelvin) hosts Dirac-cone-type spin-helical surface states at the Fermi level; the surface states exhibit an s-wave superconducting gap below T-c. Our study shows that the surface states of FeTe0.55Se0.45 are topologically superconducting, providing a simple and possibly high-temperature platform for realizing Majorana states.


领域地球科学 ; 气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000429805400041
WOS关键词MAJORANA FERMIONS
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
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引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/198414
专题地球科学
资源环境科学
气候变化
作者单位1.Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan;
2.Princeton Univ, Dept Phys, Princeton, NJ 08544 USA;
3.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China;
4.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China;
5.Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA;
6.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China;
7.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China;
8.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
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GB/T 7714
Zhang, Peng,Yaji, Koichiro,Hashimoto, Takahiro,et al. Observation of topological superconductivity on the surface of an iron-based superconductor[J]. SCIENCE,2018,360(6385):182-+.
APA Zhang, Peng.,Yaji, Koichiro.,Hashimoto, Takahiro.,Ota, Yuichi.,Kondo, Takeshi.,...&Shin, Shik.(2018).Observation of topological superconductivity on the surface of an iron-based superconductor.SCIENCE,360(6385),182-+.
MLA Zhang, Peng,et al."Observation of topological superconductivity on the surface of an iron-based superconductor".SCIENCE 360.6385(2018):182-+.
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