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- Publisher Website: 10.1088/1361-648X/ab4466
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Article: Pseudo chiral anomaly in zigzag graphene ribbons
Title | Pseudo chiral anomaly in zigzag graphene ribbons |
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Authors | |
Keywords | chiral anomaly chiral magnetic effect graphene ribbons transport properties |
Issue Date | 2020 |
Publisher | Institute of Physics Publishing. The Journal's web site is located at http://www.iop.org/Journals/jpcm |
Citation | Journal of Physics: Condensed Matter, 2020, v. 32 n. 2, p. article no. 025301 How to Cite? |
Abstract | As the three-dimensional analogs of graphene, Weyl semimetals display signatures of chiral anomaly which arises from charge pumping between the lowest chiral Landau levels of the Weyl nodes in the presence of parallel electric and magnetic fields. In this work, we study the pseudo chiral anomaly and its transport signatures in graphene ribbon with zigzag edges. Here 'pseudo' refers to the case where the inverse of width of zigzag graphene ribbon plays the same role as magnetic field in three-dimensional Weyl semimetals. The valley chiral bands in zigzag graphene ribbons can be introduced by edge potentials, giving rise to the nonconservation of chiral current, i.e. pseudo chiral anomaly, in the presence of a longitudinal electric field. Further numerical results reveal that pseudo magnetoconductivity of zigzag graphene ribbons is positive and has a nearly quadratic dependence on the pseudofield, which is regarded as the transport signature of pseudo chiral anomaly. |
Persistent Identifier | http://hdl.handle.net/10722/280243 |
ISSN | 2023 Impact Factor: 2.3 2023 SCImago Journal Rankings: 0.676 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Li, C-A | - |
dc.date.accessioned | 2020-01-21T11:50:42Z | - |
dc.date.available | 2020-01-21T11:50:42Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Journal of Physics: Condensed Matter, 2020, v. 32 n. 2, p. article no. 025301 | - |
dc.identifier.issn | 0953-8984 | - |
dc.identifier.uri | http://hdl.handle.net/10722/280243 | - |
dc.description.abstract | As the three-dimensional analogs of graphene, Weyl semimetals display signatures of chiral anomaly which arises from charge pumping between the lowest chiral Landau levels of the Weyl nodes in the presence of parallel electric and magnetic fields. In this work, we study the pseudo chiral anomaly and its transport signatures in graphene ribbon with zigzag edges. Here 'pseudo' refers to the case where the inverse of width of zigzag graphene ribbon plays the same role as magnetic field in three-dimensional Weyl semimetals. The valley chiral bands in zigzag graphene ribbons can be introduced by edge potentials, giving rise to the nonconservation of chiral current, i.e. pseudo chiral anomaly, in the presence of a longitudinal electric field. Further numerical results reveal that pseudo magnetoconductivity of zigzag graphene ribbons is positive and has a nearly quadratic dependence on the pseudofield, which is regarded as the transport signature of pseudo chiral anomaly. | - |
dc.language | eng | - |
dc.publisher | Institute of Physics Publishing. The Journal's web site is located at http://www.iop.org/Journals/jpcm | - |
dc.relation.ispartof | Journal of Physics: Condensed Matter | - |
dc.rights | Journal of Physics: Condensed Matter. Copyright © Institute of Physics Publishing. | - |
dc.rights | This is an author-created, un-copyedited version of an article published in [insert name of journal]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/[insert DOI]. | - |
dc.subject | chiral anomaly | - |
dc.subject | chiral magnetic effect | - |
dc.subject | graphene ribbons | - |
dc.subject | transport properties | - |
dc.title | Pseudo chiral anomaly in zigzag graphene ribbons | - |
dc.type | Article | - |
dc.identifier.email | Li, C-A: changan2@hku.hk | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1088/1361-648X/ab4466 | - |
dc.identifier.scopus | eid_2-s2.0-85077497809 | - |
dc.identifier.hkuros | 308921 | - |
dc.identifier.volume | 32 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | article no. 025301 | - |
dc.identifier.epage | article no. 025301 | - |
dc.identifier.isi | WOS:000502296600001 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0953-8984 | - |