Impurity cyclotron resonance of anomalous Dirac electrons in graphene
DC Field | Value | Language |
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dc.contributor.author | Kim, S. C. | - |
dc.contributor.author | Yang, S-R Eric | - |
dc.contributor.author | MacDonald, A. H. | - |
dc.date.accessioned | 2021-09-05T06:09:02Z | - |
dc.date.available | 2021-09-05T06:09:02Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-08-13 | - |
dc.identifier.issn | 0953-8984 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/97685 | - |
dc.description.abstract | We have investigated a new feature of impurity cyclotron resonances common to various localized potentials of graphene. A localized potential can interact with a magnetic field in an unexpected way in graphene. It can lead to formation of anomalous boundstates that have a sharp peak with a width R in the probability density inside the potential and a broad peak of size magnetic length l outside the potential. We investigate optical matrix elements of anomalous states and find that they are unusually small and depend sensitively on the magnetic field. The effect of many-body interactions on their optical conductivity is investigated using a self-consistent time-dependent Hartree-Fock approach. For a completely filled Landau level we find that an excited electron-hole pair, originating from the optical transition between two anomalous impurity states, is nearly uncorrelated with other electron-hole pairs, although it displays substantial exchange self-energy effects. This absence of correlation is a consequence of a small vertex correction in comparison to the difference between renormalized transition energies computed within the one electron-hole pair approximation. However, an excited electron-hole pair originating from the optical transition between a normal and an anomalous impurity state can be substantially correlated with other electron-hole states with a significant optical strength. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | HARTREE-FOCK | - |
dc.subject | GAS | - |
dc.subject | SPECTROSCOPY | - |
dc.subject | EXCITATIONS | - |
dc.subject | LEVEL | - |
dc.title | Impurity cyclotron resonance of anomalous Dirac electrons in graphene | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yang, S-R Eric | - |
dc.identifier.doi | 10.1088/0953-8984/26/32/325302 | - |
dc.identifier.scopusid | 2-s2.0-84904808600 | - |
dc.identifier.wosid | 000340656800004 | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICS-CONDENSED MATTER, v.26, no.32 | - |
dc.relation.isPartOf | JOURNAL OF PHYSICS-CONDENSED MATTER | - |
dc.citation.title | JOURNAL OF PHYSICS-CONDENSED MATTER | - |
dc.citation.volume | 26 | - |
dc.citation.number | 32 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | HARTREE-FOCK | - |
dc.subject.keywordPlus | GAS | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
dc.subject.keywordPlus | EXCITATIONS | - |
dc.subject.keywordPlus | LEVEL | - |
dc.subject.keywordAuthor | cyclotron resonance | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | optical conductivity | - |
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