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Dissolution of topological Fermi arcs in a dirty Weyl semimetal
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2017 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 96, no 20, article id 201401Article in journal (Refereed) Published
Abstract [en]

Weyl semimetals (WSMs) have recently attracted a great deal of attention as they provide a condensed matter realization of chiral anomaly, feature topologically protected Fermi arc surface states, and sustain sharp chiral Weyl quasiparticles up to a critical disorder at which a continuous quantum phase transition (QPT) drives the system into a metallic phase. We here numerically demonstrate that with increasing strength of disorder, the Fermi arc gradually loses its sharpness, and close to the WSM-metal QPT it completely dissolves into the metallic bath of the bulk. The predicted topological nature of the WSM-metal QPT and the resulting bulk-boundary correspondence across this transition can be directly observed in angle-resolved photoemission spectroscopy (ARPES) and Fourier transformed scanning tunneling microscopy (STM) measurements by following the continuous deformation of the Fermi arcs with increasing disorder in recently discovered Weyl materials.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2017. Vol. 96, no 20, article id 201401
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Physical Sciences
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URN: urn:nbn:se:kth:diva-217937DOI: 10.1103/PhysRevB.96.201401ISI: 000414318000002Scopus ID: 2-s2.0-85039048182OAI: oai:DiVA.org:kth-217937DiVA, id: diva2:1158854
Note

QC 20171121

Available from: 2017-11-21 Created: 2017-11-21 Last updated: 2017-11-29Bibliographically approved

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Juricic, Vladimir

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