Possibility of realizing quantum spin Hall effect at room temperature in
- Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy; Fudan Univ., Shanghai (China)
- Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
- Fudan Univ., Shanghai (China)
Two-dimensional quantum spin Hall (QSH) insulators with reasonably wide band gaps are imperative for the development of various innovative technologies. Through systematic density functional calculations and tight-binding simulations, we found that stanene on an -alumina surface may possess a sizeable topologically nontrivial band gap at the point. Furthermore, stanene is atomically bonded to but electronically decoupled from the substrate, providing high structural stability and isolated QSH states to a large extent. We conclude the underlying physical mechanism is rather general, and this finding may lead to the opening of a new vista for the exploration of QSH insulators for room temperature device applications.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES); Univ. of California, Irvine, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012670; FG02-05ER46237
- OSTI ID:
- 1388926
- Alternate ID(s):
- OSTI ID: 1260438
- Journal Information:
- Physical Review B, Vol. 94, Issue 3; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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