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- Publisher Website: 10.1103/PhysRevLett.99.236809
- Scopus: eid_2-s2.0-36849027178
- PMID: 18233399
- WOS: WOS:000251451000055
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Article: Valley-contrasting physics in graphene: Magnetic moment and topological transport
Title | Valley-contrasting physics in graphene: Magnetic moment and topological transport |
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Authors | |
Issue Date | 2007 |
Publisher | American Physical Society. The Journal's web site is located at http://prl.aps.org |
Citation | Physical Review Letters, 2007, v. 99 n. 23, article no. 236809 How to Cite? |
Abstract | We investigate physical properties that can be used to distinguish the valley degree of freedom in systems where inversion symmetry is broken, using graphene systems as examples. We show that the pseudospin associated with the valley index of carriers has an intrinsic magnetic moment, in close analogy with the Bohr magneton for the electron spin. There is also a valley dependent Berry phase effect that can result in a valley contrasting Hall transport, with carriers in different valleys turning into opposite directions transverse to an in-plane electric field. These effects can be used to generate and detect valley polarization by magnetic and electric means, forming the basis for the valley-based electronics applications. © 2007 The American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/175104 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 3.040 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Xiao, D | en_US |
dc.contributor.author | Yao, W | en_US |
dc.contributor.author | Niu, Q | en_US |
dc.date.accessioned | 2012-11-26T08:49:13Z | - |
dc.date.available | 2012-11-26T08:49:13Z | - |
dc.date.issued | 2007 | en_US |
dc.identifier.citation | Physical Review Letters, 2007, v. 99 n. 23, article no. 236809 | - |
dc.identifier.issn | 0031-9007 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/175104 | - |
dc.description.abstract | We investigate physical properties that can be used to distinguish the valley degree of freedom in systems where inversion symmetry is broken, using graphene systems as examples. We show that the pseudospin associated with the valley index of carriers has an intrinsic magnetic moment, in close analogy with the Bohr magneton for the electron spin. There is also a valley dependent Berry phase effect that can result in a valley contrasting Hall transport, with carriers in different valleys turning into opposite directions transverse to an in-plane electric field. These effects can be used to generate and detect valley polarization by magnetic and electric means, forming the basis for the valley-based electronics applications. © 2007 The American Physical Society. | en_US |
dc.language | eng | en_US |
dc.publisher | American Physical Society. The Journal's web site is located at http://prl.aps.org | en_US |
dc.relation.ispartof | Physical Review Letters | en_US |
dc.title | Valley-contrasting physics in graphene: Magnetic moment and topological transport | en_US |
dc.type | Article | en_US |
dc.identifier.email | Yao, W: wangyao@hku.hk | en_US |
dc.identifier.authority | Yao, W=rp00827 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1103/PhysRevLett.99.236809 | en_US |
dc.identifier.pmid | 18233399 | - |
dc.identifier.scopus | eid_2-s2.0-36849027178 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-36849027178&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 99 | en_US |
dc.identifier.issue | 23 | en_US |
dc.identifier.spage | article no. 236809 | - |
dc.identifier.epage | article no. 236809 | - |
dc.identifier.isi | WOS:000251451000055 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Xiao, D=35249533800 | en_US |
dc.identifier.scopusauthorid | Yao, W=35141935300 | en_US |
dc.identifier.scopusauthorid | Niu, Q=7006052653 | en_US |
dc.identifier.citeulike | 2158958 | - |
dc.identifier.issnl | 0031-9007 | - |