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Article: Vacancy-induced bound states in topological insulators
Title | Vacancy-induced bound states in topological insulators | ||||
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Authors | |||||
Issue Date | 2011 | ||||
Publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | ||||
Citation | Physical Review B (Condensed Matter and Materials Physics), 2011, v. 84 n. 3, article no. 035307 How to Cite? | ||||
Abstract | We present an exact solution of a modified Dirac equation for topological insulator in the presence of a hole or vacancy to demonstrate that vacancies can induce bound states in the band gap of topological insulators. They arise due to the Z 2 classification of time-reversal invariant insulators. Coexistence of the in-gap bound states and the edge or surface states in topological insulators suggests that imperfections may affect transport properties of topological insulators via additional bound states near the system boundary. © 2011 American Physical Society. | ||||
Persistent Identifier | http://hdl.handle.net/10722/139648 | ||||
ISSN | 2014 Impact Factor: 3.736 | ||||
ISI Accession Number ID |
Funding Information: We would like to thank T. K. Ng for stimulating our interest on this topic. This work was supported by the Research Grant Council of Hong Kong under Grant Nos. HKU 7051/11P and HKUST3/CRF/09. | ||||
References | |||||
Grants |
DC Field | Value | Language |
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dc.contributor.author | Shan, WY | en_HK |
dc.contributor.author | Lu, J | en_HK |
dc.contributor.author | Lu, HZ | en_HK |
dc.contributor.author | Shen, SQ | en_HK |
dc.date.accessioned | 2011-09-23T05:52:55Z | - |
dc.date.available | 2011-09-23T05:52:55Z | - |
dc.date.issued | 2011 | en_HK |
dc.identifier.citation | Physical Review B (Condensed Matter and Materials Physics), 2011, v. 84 n. 3, article no. 035307 | - |
dc.identifier.issn | 1098-0121 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/139648 | - |
dc.description.abstract | We present an exact solution of a modified Dirac equation for topological insulator in the presence of a hole or vacancy to demonstrate that vacancies can induce bound states in the band gap of topological insulators. They arise due to the Z 2 classification of time-reversal invariant insulators. Coexistence of the in-gap bound states and the edge or surface states in topological insulators suggests that imperfections may affect transport properties of topological insulators via additional bound states near the system boundary. © 2011 American Physical Society. | en_HK |
dc.language | eng | en_US |
dc.publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | en_HK |
dc.relation.ispartof | Physical Review B (Condensed Matter and Materials Physics) | - |
dc.rights | Copyright 2011 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.84.035307 | - |
dc.title | Vacancy-induced bound states in topological insulators | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Lu, HZ: luhz@hku.hk | en_HK |
dc.identifier.email | Shen, SQ: sshen@hkucc.hku.hk | en_HK |
dc.identifier.authority | Lu, HZ=rp01599 | en_HK |
dc.identifier.authority | Shen, SQ=rp00775 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevB.84.035307 | en_HK |
dc.identifier.scopus | eid_2-s2.0-79961214919 | en_HK |
dc.identifier.hkuros | 195620 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-79961214919&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 84 | en_HK |
dc.identifier.issue | 3 | en_HK |
dc.identifier.spage | article no. 035307 | - |
dc.identifier.epage | article no. 035307 | - |
dc.identifier.isi | WOS:000292924800010 | - |
dc.publisher.place | United States | en_HK |
dc.relation.project | Quantum Order in Novel Materials: Superconductivity and Topological Order | - |
dc.relation.project | Quantum Order in Novel Materials: Superconductivity and Topological Order | - |
dc.relation.project | Quantum Order in Novel Materials: Superconductivity and Topological Order | - |
dc.identifier.scopusauthorid | Shan, WY=36093352700 | en_HK |
dc.identifier.scopusauthorid | Lu, J=16407091300 | en_HK |
dc.identifier.scopusauthorid | Lu, HZ=24376662200 | en_HK |
dc.identifier.scopusauthorid | Shen, SQ=7403431266 | en_HK |
dc.identifier.issnl | 1098-0121 | - |