Gapped electronic structure of epitaxial stanene on InSb(111)
- Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Physics; Univ. of Illinois at Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- Academia Sinica, Taipei (Taiwan). Inst. of Atomic and Molecular Sciences
- Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Physics; Univ. of Illinois at Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab.; Nanjing Univ. of Science and Technology, Nanjing (China). College of Science
- Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Physics; Univ. of Illinois at Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab.
- Univ. of Missouri, Columbia, MO (United States). Dept. of Physics and Astronomy
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- Academia Sinica, Taipei (Taiwan). Inst. of Atomic and Molecular Sciences; Georgia Inst. of Technology, Atlanta, GA (United States). School of Physics
We report that stanene (single-layer gray tin), with an electronic structure akin to that of graphene but exhibiting a much larger spin-orbit gap, offers a promising platform for room-temperature electronics based on the quantum spin Hall (QSH) effect. This material has received much theoretical attention, but a suitable substrate for stanene growth that results in an overall gapped electronic structure has been elusive; a sizable gap is necessary for room-temperature applications. Here, we report a study of stanene, epitaxially grown on the (111)B-face of indium antimonide (InSb). Angle-resolved photoemission spectroscopy measurements reveal a gap of 0.44 eV, in agreement with our first-principles calculations. Lastly, the results indicate that stanene on InSb(111) is a strong contender for electronic QSH applications.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univerisity of Illinois at Urbana-Champaign, Urbana, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC02-05CH11231; FG02-07ER46383
- OSTI ID:
- 1571094
- Alternate ID(s):
- OSTI ID: 1416628; OSTI ID: 1416710
- Journal Information:
- Physical Review B, Vol. 97, Issue 3; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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