Atomically Thin Quantum Spin Hall Insulators

Atomically thin topological materials are attracting growing attention for their potential to radically transform classical and quantum electronic device concepts. Among them is the quantum spin Hall (QSH) insulator—a 2D state of matter that arises from interplay of topological band inversion and st...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2021-06, Vol.33 (22), p.e2008029-n/a
Main Authors: Lodge, Michael S., Yang, Shengyuan A., Mukherjee, Shantanu, Weber, Bent
Format: Article
Language:English
Subjects:
2D topological insulators
helical Tomonaga–Luttinger liquids
Insulators
Majorana fermions
Materials science
Quantum computing
quantum spin‐Hall effect
Spin-orbit interactions
topological superconductivity
Topology
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Summary:Atomically thin topological materials are attracting growing attention for their potential to radically transform classical and quantum electronic device concepts. Among them is the quantum spin Hall (QSH) insulator—a 2D state of matter that arises from interplay of topological band inversion and strong spin–orbit coupling, with large tunable bulk bandgaps up to 800 meV and gapless, 1D edge states. Reviewing recent advances in materials science and engineering alongside theoretical description, the QSH materials library is surveyed with focus on the prospects for QSH‐based device applications. In particular, theoretical predictions of nontrivial superconducting pairing in the QSH state toward Majorana‐based topological quantum computing are discussed, which are the next frontier in QSH materials research. Atomically thin quantum spin Hall (QSH) insulators—a class of 2D topological insulators—promises to radically transform classical and quantum electronic device concepts. Advances in materials science and engineering are surveyed, alongside a theoretical description, and the future perspectives for electronic applications are discussed, including the quest to realizing Majorana‐based topological quantum computing—the next frontier in QSH materials research.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.202008029