dc.contributor.author
Trescher, Maximilian
dc.contributor.author
Sbierski, Björn
dc.contributor.author
Brouwer, Piet W.
dc.contributor.author
Bergholtz, Emil J.
dc.date.accessioned
2019-01-09T12:31:22Z
dc.date.available
2019-01-09T12:31:22Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/23665
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-1452
dc.description.abstract
Although Lorentz invariance forbids the presence of a term that tilts the energy-momentum relation in the Weyl Hamiltonian, a tilted dispersion is not forbidden and, in fact, generic for condensed matter realizations of Weyl semimetals. We here investigate the combined effect of such a tilted Weyl dispersion and the presence of potential disorder. In particular, we address the influence of a tilt on the disorder-induced phase transition between a quasiballistic phase at weak disorder, in which the disorder is an irrelevant perturbation, and a diffusive phase at strong disorder. Our main result is that the presence of a tilt leads to a reduction of the critical disorder strength for this transition or, equivalently, that increasing the tilt at fixed disorder strength drives the system through the phase transition to the diffusive strong-disorder phase. Notably this obscures the tilt-induced Lifshitz transition to an overtilted type II Weyl phase at any finite disorder strength. Our results are supported by analytical calculations using the self-consistent Born approximation and numerical calculations of the density of states and of transport properties.
en
dc.format.extent
8 Seiten
dc.subject
Geometric & topological phases
en
dc.subject
Phase diagrams
en
dc.subject
Quantum transport
en
dc.subject
Disordered systems
en
dc.subject
Topological materials
en
dc.subject
Weyl semimetal
en
dc.subject
S-matrix method in transport
en
dc.subject
Tight-binding model
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Tilted disordered Weyl semimetals
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
045139
dcterms.bibliographicCitation.doi
10.1103/PhysRevB.95.045139
dcterms.bibliographicCitation.journaltitle
Physical Review B
dcterms.bibliographicCitation.number
4
dcterms.bibliographicCitation.volume
95
dcterms.bibliographicCitation.url
https://doi.org/10.1103/PhysRevB.95.045139
dcterms.rightsHolder.note
Copyright des Verlages
dcterms.rightsHolder.url
http://journals.aps.org/copyrightFAQ.html#post
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
1098-0121 (Print)
dcterms.isPartOf.issn
1550-235X (Online)