Emergence of topological and trivial interface states in VSe2 films coupled to Bi2Se3

Hlevyack, Joseph Andrew; Chan, Yang-Hao; Lin, Meng-Kai; He, Tao; Peng, Wei-Hsiang; Royal, Ellen Claire; Chou, Mei-Yin; Chiang, Tai-Chang

doi:10.1103/physrevb.105.195119

Emergence of topological and trivial interface states in VSe₂ films coupled to Bi₂Se₃

Journal Article · Thu May 12 00:00:00 EDT 2022 · Physical Review. B

DOI:https://doi.org/10.1103/physrevb.105.195119· OSTI ID:1867374

^[1]; Chan, Yang-Hao ^[2]; Lin, Meng-Kai ^[3]; ^[4]; Peng, Wei-Hsiang ^[5]; Royal, Ellen Claire ^[5]; ^[6]; ^[5]

Univ. of Illinois at Urbana-Champaign, IL (United States); University of Illinois at Urbana-Champaign
Academia Sinica, Taipei (Taiwan); National Center for Theoretical Sciences, Taipei (Taiwan)
Univ. of Illinois at Urbana-Champaign, IL (United States); National Central Univ., Taoyuan (Taiwan)
Academia Sinica, Taipei (Taiwan)
Univ. of Illinois at Urbana-Champaign, IL (United States)
Academia Sinica, Taipei (Taiwan); National Taiwan Univ., Taipei (Taiwan)

Coupling ordinary metals with topological Bi₂Se₃ can instigate the long-range migration of the spin-polarized Dirac states. Instead, for trivial metallic VSe₂ films on Bi₂Se₃, topological and trivial Rashba-type interface states emerge, each strongly localized at the VSe₂/Bi₂Se₃ interface. Their rapidly decaying spectral weights are uncovered by thickness-dependent band mappings of VSe₂ films and replicated by a phenomenological first-principles model of the spectral function. In this work, the results are pertinent to spintronic devices requiring spin transmission across metal/topological insulator interfaces.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Ministry of Science and Technology of Taiwan

Grant/Contract Number:: FG02-07ER46383

OSTI ID:: 1867374

Journal Information:: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 19 Vol. 105; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Emergence of topological and trivial interface states in VSe2 films coupled to Bi2Se3

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Emergence of topological and trivial interface states in VSe₂ films coupled to Bi₂Se₃