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Article: Quantum percolation in quantum spin Hall antidot systems

TitleQuantum percolation in quantum spin Hall antidot systems
Authors
Issue Date2012
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0295-5075
Citation
EPL (Europhysics Letters), 2012, v. 100 n. 1, p. 17013:1-5 How to Cite?
AbstractWe study the influences of antidot-induced bound states on transport properties of two-dimensional quantum spin Hall insulators. The bound states are found able to induce quantum percolation in the originally insulating bulk. At some critical antidot densities, the quantum spin Hall phase can be completely destroyed due to the maximum quantum percolation. For systems with periodic boundaries, the maximum quantum percolation between the bound states creates intermediate extended states in the bulk which is originally gapped and insulating. The antidot-induced bound states plays the same role as the magnetic field in the quantum Hall effect, both makes electrons go into cyclotron motions. We also draw an analogy between the quantum percolation phenomena in this system and that in the network models of quantum Hall effect.
Persistent Identifierhttp://hdl.handle.net/10722/225568
ISSN
2015 Impact Factor: 1.963
2015 SCImago Journal Rankings: 0.565

 

DC FieldValueLanguage
dc.contributor.authorChu, RL-
dc.contributor.authorLiu, J-
dc.contributor.authorShen, SQ-
dc.date.accessioned2016-05-20T01:52:05Z-
dc.date.available2016-05-20T01:52:05Z-
dc.date.issued2012-
dc.identifier.citationEPL (Europhysics Letters), 2012, v. 100 n. 1, p. 17013:1-5-
dc.identifier.issn0295-5075-
dc.identifier.urihttp://hdl.handle.net/10722/225568-
dc.description.abstractWe study the influences of antidot-induced bound states on transport properties of two-dimensional quantum spin Hall insulators. The bound states are found able to induce quantum percolation in the originally insulating bulk. At some critical antidot densities, the quantum spin Hall phase can be completely destroyed due to the maximum quantum percolation. For systems with periodic boundaries, the maximum quantum percolation between the bound states creates intermediate extended states in the bulk which is originally gapped and insulating. The antidot-induced bound states plays the same role as the magnetic field in the quantum Hall effect, both makes electrons go into cyclotron motions. We also draw an analogy between the quantum percolation phenomena in this system and that in the network models of quantum Hall effect.-
dc.languageeng-
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0295-5075-
dc.relation.ispartofEPL (Europhysics Letters)-
dc.rightsEPL (Europhysics Letters). Copyright © Institute of Physics Publishing Ltd.-
dc.rightsThis is an author-created, un-copyedited version of an article published in EPL (Europhysics Letters). 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/10.1209/0295-5075/100/17013-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleQuantum percolation in quantum spin Hall antidot systems-
dc.typeArticle-
dc.identifier.emailChu, RL: jimichu@hku.hk-
dc.identifier.emailLiu, J: jliuphy@hku.hk-
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hk-
dc.identifier.authorityShen, SQ=rp00775-
dc.description.naturepostprint-
dc.identifier.doi10.1209/0295-5075/100/17013-
dc.identifier.hkuros213433-
dc.identifier.volume100-
dc.identifier.issue1-
dc.identifier.spage17013:1-
dc.identifier.epage17013:5-
dc.publisher.placeUnited Kingdom-

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