File Download
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1103/PhysRevB.87.195122
- Scopus: eid_2-s2.0-84877884939
- WOS: WOS:000319115500004
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Quantum impurity in the bulk of a topological insulator
Title | Quantum impurity in the bulk of a topological insulator |
---|---|
Authors | |
Issue Date | 2013 |
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), 2013, v. 87 n. 19, article no. 195122 How to Cite? |
Abstract | We investigate physical properties of an Anderson impurity embedded in the bulk of a topological insulator. The slave-boson mean-field approximation is used to account for the strong electron correlation at the impurity. Different from the results of a quantum impurity on the surface of a topological insulator, we find for the band-inverted case that a Kondo resonant peak and in-gap bound states can be produced simultaneously. However, only one of them appears for the normal case. It is shown that the mixed-valence regime is much broader in the band-inverted case, while it shrinks to a very narrow regime in the normal case. Furthermore, a self-screening of the Kondo effect may appear when the interaction between the bound-state spin and impurity spin is taken into account. |
Persistent Identifier | http://hdl.handle.net/10722/184650 |
ISSN | 2014 Impact Factor: 3.736 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lu, H | - |
dc.contributor.author | Lu, H | - |
dc.contributor.author | Shen, S | - |
dc.contributor.author | Ng, T | - |
dc.date.accessioned | 2013-07-15T10:01:42Z | - |
dc.date.available | 2013-07-15T10:01:42Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Physical Review B (Condensed Matter and Materials Physics), 2013, v. 87 n. 19, article no. 195122 | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/10722/184650 | - |
dc.description.abstract | We investigate physical properties of an Anderson impurity embedded in the bulk of a topological insulator. The slave-boson mean-field approximation is used to account for the strong electron correlation at the impurity. Different from the results of a quantum impurity on the surface of a topological insulator, we find for the band-inverted case that a Kondo resonant peak and in-gap bound states can be produced simultaneously. However, only one of them appears for the normal case. It is shown that the mixed-valence regime is much broader in the band-inverted case, while it shrinks to a very narrow regime in the normal case. Furthermore, a self-screening of the Kondo effect may appear when the interaction between the bound-state spin and impurity spin is taken into account. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | - |
dc.relation.ispartof | Physical Review B (Condensed Matter and Materials Physics) | - |
dc.rights | Copyright 2013 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.87.195122 | - |
dc.title | Quantum impurity in the bulk of a topological insulator | - |
dc.type | Article | - |
dc.identifier.email | Lu, H: luhf@hku.hk | - |
dc.identifier.email | Lu, H: luhz@hku.hk | - |
dc.identifier.email | Shen, S: sshen@hkucc.hku.hk | - |
dc.identifier.authority | Lu, H=rp01599 | - |
dc.identifier.authority | Shen, S=rp00775 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevB.87.195122 | - |
dc.identifier.scopus | eid_2-s2.0-84877884939 | - |
dc.identifier.hkuros | 215400 | - |
dc.identifier.volume | 87 | - |
dc.identifier.issue | 19 | - |
dc.identifier.spage | article no. 195122 | - |
dc.identifier.epage | article no. 195122 | - |
dc.identifier.isi | WOS:000319115500004 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1098-0121 | - |