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Nodal arc of disordered Dirac fermions and non-Hermitian band theory
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Nodal arc of disordered Dirac fermions and non-Hermitian band theory
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Name
PhysRevB.99.201107.pdf
Description
Published version
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579.48 KB
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sword-2021-06-28T15:50:52.original.xml (130 B)
Original SWORD entry document
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Author(s)
Papaj, Michał
•
Isobe, Hiroki
•
Fu, Liang
Date Issued
2019
Journal
Physical Review B
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
© 2019 American Physical Society. We show that Dirac fermion systems in two dimensions generally exhibit a disorder-induced nodal arc replacing the nodal point and tilted Dirac cone, provided that the two components of the Dirac fermion correspond to two distinct orbitals unrelated by symmetry. This result is explicitly demonstrated using renormalization-group analysis in a disordered Dirac model that we introduce, where the disorder potential acts differently on the two orbitals. As we show by numerical simulations and self-consistent Born approximation calculation, this drives the system into a new strongly disordered phase.
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Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
https://hdl.handle.net/1721.1/136203
DOI of Published Version
10.1103/PHYSREVB.99.201107
