Nodal arc of disordered Dirac fermions and non-Hermitian band theory
Name
PhysRevB.99.201107.pdf
Description
Published version
Size
579.48 KB
Format
Unknown
Checksum (MD5)
be7c12434e9c331fbd8b0e9efcc47615
Author(s)
Papaj, Michal
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Materials Research Laboratory
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.
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DOI of Published Version
https://doi.org/10.1103/PHYSREVB.99.201107
