Topological Quantum Well States in Pb/Sb Thin-Film Heterostructures
Abstract
Composite topological heterostructures, wherein topologically protected states are electronically tuned due to their proximity to other matter, are key avenues for exploring emergent physical phenomena. Particularly, pairing a topological material with a superconductor such as Pb is a promising means for generating a topological superconducting phase with exotic Majorana quasiparticles, but oft-neglected is the emergence of bulklike spin-polarized states that are quite relevant to applications. Using high-resolution photoemission spectroscopy and first-principles calculations, we report the emergence of bulklike spin-polarized topological quantum well states with long coherence lengths in Pb films grown on the topological semimetal Sb. The results establish Pb/Sb heterostructures as topological superconductor candidates and advance the current understanding of topological coupling effects required for realizing emergent physics and for designing advanced spintronic device architectures.
- Authors:
-
[1];
[2];
[1];
[1]
- Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan, Physics Division, National Center for Theoretical Sciences, Taipei 10617, Taiwan
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan, Department of Physics, National Taiwan University, Taipei 10617, Taiwan
- Publication Date:
- Research Org.:
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- OSTI Identifier:
- 2328655
- Alternate Identifier(s):
- OSTI ID: 2335698
- Grant/Contract Number:
- FG02-07ER46383
- Resource Type:
- Published Article
- Journal Name:
- ACS Nano
- Additional Journal Information:
- Journal Name: ACS Nano Journal Volume: 18 Journal Issue: 14; Journal ID: ISSN 1936-0851
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; thin-film heterostructures; emergent electronic structure; topological proximity coupling; topological quantum well states; topological superconductivity
Citation Formats
Li, Yao, Chan, Yang-hao, Hlevyack, Joseph A., Bowers, John W., Chou, Mei-Yin, and Chiang, Tai-Chang. Topological Quantum Well States in Pb/Sb Thin-Film Heterostructures. United States: N. p., 2024.
Web. doi:10.1021/acsnano.4c00724.
Li, Yao, Chan, Yang-hao, Hlevyack, Joseph A., Bowers, John W., Chou, Mei-Yin, & Chiang, Tai-Chang. Topological Quantum Well States in Pb/Sb Thin-Film Heterostructures. United States. https://doi.org/10.1021/acsnano.4c00724
Li, Yao, Chan, Yang-hao, Hlevyack, Joseph A., Bowers, John W., Chou, Mei-Yin, and Chiang, Tai-Chang. Tue .
"Topological Quantum Well States in Pb/Sb Thin-Film Heterostructures". United States. https://doi.org/10.1021/acsnano.4c00724.
@article{osti_2328655,
title = {Topological Quantum Well States in Pb/Sb Thin-Film Heterostructures},
author = {Li, Yao and Chan, Yang-hao and Hlevyack, Joseph A. and Bowers, John W. and Chou, Mei-Yin and Chiang, Tai-Chang},
abstractNote = {Composite topological heterostructures, wherein topologically protected states are electronically tuned due to their proximity to other matter, are key avenues for exploring emergent physical phenomena. Particularly, pairing a topological material with a superconductor such as Pb is a promising means for generating a topological superconducting phase with exotic Majorana quasiparticles, but oft-neglected is the emergence of bulklike spin-polarized states that are quite relevant to applications. Using high-resolution photoemission spectroscopy and first-principles calculations, we report the emergence of bulklike spin-polarized topological quantum well states with long coherence lengths in Pb films grown on the topological semimetal Sb. The results establish Pb/Sb heterostructures as topological superconductor candidates and advance the current understanding of topological coupling effects required for realizing emergent physics and for designing advanced spintronic device architectures.},
doi = {10.1021/acsnano.4c00724},
journal = {ACS Nano},
number = 14,
volume = 18,
place = {United States},
year = {Tue Mar 26 00:00:00 EDT 2024},
month = {Tue Mar 26 00:00:00 EDT 2024}
}
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