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Article: Detecting monopole charge in Weyl semimetals via quantum interference transport

TitleDetecting monopole charge in Weyl semimetals via quantum interference transport
Authors
Issue Date2016
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B: covering condensed matter and materials physics, 2016, v. 93 n. 16, article no. 161110 , p. 1-5 How to Cite?
AbstractTopological Weyl semimetals can host Weyl nodes with monopole charges in momentum space. How to detect the signature of the monopole charges in quantum transport remains a challenging topic. Here, we reveal the connection between the parity of monopole charge in topological semimetals and the quantum interference corrections to the conductivity. We show that the parity of monopole charge determines the sign of the quantum interference correction, with odd and even parity yielding the weak antilocalization and weak localization effects, respectively. This is attributed to the Berry phase difference between time-reversed trajectories circulating the Fermi sphere that encloses the monopole charges. From standard Feynman diagram calculations, we further show that the weak-field magnetoconductivity at low temperatures is proportional to +B √ in double-Weyl semimetals and −B √ in single-Weyl semimetals, respectively, which could be verified experimentally.
Persistent Identifierhttp://hdl.handle.net/10722/225652
ISSN
2017 Impact Factor: 3.813
ISI Accession Number ID
Errata

 

DC FieldValueLanguage
dc.contributor.authorDai, X-
dc.contributor.authorLu, HZ-
dc.contributor.authorShen, S-
dc.contributor.authorYao, H-
dc.date.accessioned2016-05-20T08:09:46Z-
dc.date.available2016-05-20T08:09:46Z-
dc.date.issued2016-
dc.identifier.citationPhysical Review B: covering condensed matter and materials physics, 2016, v. 93 n. 16, article no. 161110 , p. 1-5-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/225652-
dc.description.abstractTopological Weyl semimetals can host Weyl nodes with monopole charges in momentum space. How to detect the signature of the monopole charges in quantum transport remains a challenging topic. Here, we reveal the connection between the parity of monopole charge in topological semimetals and the quantum interference corrections to the conductivity. We show that the parity of monopole charge determines the sign of the quantum interference correction, with odd and even parity yielding the weak antilocalization and weak localization effects, respectively. This is attributed to the Berry phase difference between time-reversed trajectories circulating the Fermi sphere that encloses the monopole charges. From standard Feynman diagram calculations, we further show that the weak-field magnetoconductivity at low temperatures is proportional to +B √ in double-Weyl semimetals and −B √ in single-Weyl semimetals, respectively, which could be verified experimentally.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/-
dc.relation.ispartofPhysical Review B: covering condensed matter and materials physics-
dc.rightsCopyright 2016 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.93.161110-
dc.titleDetecting monopole charge in Weyl semimetals via quantum interference transport-
dc.typeArticle-
dc.identifier.emailShen, S: sshen@hkucc.hku.hk-
dc.identifier.authorityShen, S=rp00775-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.93.161110-
dc.identifier.scopuseid_2-s2.0-84964556119-
dc.identifier.hkuros257912-
dc.identifier.volume93-
dc.identifier.issue16-
dc.identifier.spagearticle no. 161110, p. 1-
dc.identifier.epagearticle no. 161110, p. 5-
dc.identifier.isiWOS:000374536500002-
dc.publisher.placeUnited States-
dc.relation.erratumdoi:10.1103/PhysRevB.93.199902-

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