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Article: Band structure renormalization and weak pseudogap behavior in Na0.33CoO2: Fluctuation exchange study based on a single-band model
Title | Band structure renormalization and weak pseudogap behavior in Na0.33CoO2: Fluctuation exchange study based on a single-band model |
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Authors | |
Keywords | Physics |
Issue Date | 2007 |
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), 2007, v. 76 n. 21, article no. 212506 How to Cite? |
Abstract | Based on a single-band Hubbard model and the fluctuation exchange approximation, the effective mass and the energy band renormalization in Na0.33 Co O2 is elaborated. The renormalization is observed to exhibit certain kind of anisotropy, which agrees qualitatively with the angle-resolved photoemission spectroscopy measurements. Moreover, the spectral function and density of states in the normal state are calculated, with a weak pseudogap behavior being seen, which is explained as a result of the strong Coulomb correlations. Our results suggest that the large Fermi surface associated with the a1g band plays likely a central role in the charge dynamics. © 2007 The American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/57332 |
ISSN | 2014 Impact Factor: 3.736 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yao, ZJ | en_HK |
dc.contributor.author | Li, JX | en_HK |
dc.contributor.author | Wang, ZD | en_HK |
dc.date.accessioned | 2010-04-12T01:33:22Z | - |
dc.date.available | 2010-04-12T01:33:22Z | - |
dc.date.issued | 2007 | en_HK |
dc.identifier.citation | Physical Review B (Condensed Matter and Materials Physics), 2007, v. 76 n. 21, article no. 212506 | - |
dc.identifier.issn | 1098-0121 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/57332 | - |
dc.description.abstract | Based on a single-band Hubbard model and the fluctuation exchange approximation, the effective mass and the energy band renormalization in Na0.33 Co O2 is elaborated. The renormalization is observed to exhibit certain kind of anisotropy, which agrees qualitatively with the angle-resolved photoemission spectroscopy measurements. Moreover, the spectral function and density of states in the normal state are calculated, with a weak pseudogap behavior being seen, which is explained as a result of the strong Coulomb correlations. Our results suggest that the large Fermi surface associated with the a1g band plays likely a central role in the charge dynamics. © 2007 The American Physical Society. | en_HK |
dc.language | eng | en_HK |
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 2007 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.76.212506 | - |
dc.subject | Physics | en_HK |
dc.title | Band structure renormalization and weak pseudogap behavior in Na0.33CoO2: Fluctuation exchange study based on a single-band model | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0163-1829&volume=76&issue=21&spage=212506&epage=1 &date=2007&atitle=Band+structure+renormalization+and+weak+pseudogap+behavior+in+Na0.33CoO2:+fluctuation+exchange+study+based+on+a+single-band+model | en_HK |
dc.identifier.email | Yao, ZJ: zjyao@hku.hk | en_HK |
dc.identifier.email | Wang, ZD: zwang@hkucc.hku.hk | en_HK |
dc.identifier.authority | Yao, ZJ=rp00828 | en_HK |
dc.identifier.authority | Wang, ZD=rp00802 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1103/PhysRevB.76.212506 | en_HK |
dc.identifier.scopus | eid_2-s2.0-37349129609 | en_HK |
dc.identifier.hkuros | 148488 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-37349129609&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 76 | en_HK |
dc.identifier.issue | 21 | en_HK |
dc.identifier.spage | article no. 212506 | - |
dc.identifier.epage | article no. 212506 | - |
dc.identifier.isi | WOS:000251986100019 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Yao, ZJ=24172115800 | en_HK |
dc.identifier.scopusauthorid | Li, JX=8678926100 | en_HK |
dc.identifier.scopusauthorid | Wang, ZD=14828459100 | en_HK |
dc.identifier.issnl | 1098-0121 | - |