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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 (Condensed Matter and Materials Physics), 2016, v. 93 n. 16, p. 161110(R):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
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
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 (Condensed Matter and Materials Physics), 2016, v. 93 n. 16, p. 161110(R):1-5-
dc.identifier.issn1098-0121-
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 (Condensed Matter and Materials Physics)-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
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.naturepostprint-
dc.identifier.doi10.1103/PhysRevB.93.161110-
dc.identifier.hkuros257912-
dc.identifier.volume93-
dc.identifier.issue16-
dc.identifier.spage161110(R):1-
dc.identifier.epage161110(R):5-
dc.publisher.placeUnited States-
dc.relation.erratumdoi:10.1103/PhysRevB.93.199902-

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