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- Scopus: eid_2-s2.0-79960152586
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Article: Theory for superconductivity in (Tl,K)Fe xSe 2 as a doped Mott insulator
| Title | Theory for superconductivity in (Tl,K)Fe xSe 2 as a doped Mott insulator | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Authors | |||||||||||
| Keywords | Superconductivity Condensed matter: electrical, magnetic and optical | ||||||||||
| Issue Date | 2011 | ||||||||||
| Publisher | Institute of Physics Publishing Ltd.. The Journal's web site is located at http://iopscience.iop.org/0295-5075 | ||||||||||
| Citation | Epl, 2011, v. 95 n. 1 How to Cite? | ||||||||||
| Abstract | Possible superconductivity in the recently discovered (Tl,K)Fe xSe 2 compounds is studied from the viewpoint of doped Mott insulator. The Mott insulating phase is examined to be preferred in the parent compound at x=1.5 due to the presence of Fe-vacancies. Partial filling of vacancies at the Fe-sites introduces electron carriers and leads to electron-doped superconductivity. By using a two-orbital Hubbard model in the strong-coupling limit, we find that the s-wave pairing is more favorable at small Hund's coupling, and dx 2-y 2-wave pairing is more favorable at large Hund's coupling. Copyright © 2011 EPLA. | ||||||||||
| Persistent Identifier | http://hdl.handle.net/10722/139612 | ||||||||||
| ISSN | 2023 Impact Factor: 1.8 2023 SCImago Journal Rankings: 0.498 | ||||||||||
| ISI Accession Number ID |
Funding Information: We acknowledge valuable discussions with M. H. Fang, P. A. Lee and T. K. NG. YZ and D-HX are supported by National Basic Research Program of China (Grant No. 2011CBA00103), NSFC (Grant No. 11074218) and PCSIRT (Grant No. IRT0754). W-QC and F-CZ are supported by RGC grant of HKSAR in part. | ||||||||||
| References |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Zhou, Y | en_HK |
| dc.contributor.author | Xu, DH | en_HK |
| dc.contributor.author | Zhang, FC | en_HK |
| dc.contributor.author | Chen, WQ | en_HK |
| dc.date.accessioned | 2011-09-23T05:52:39Z | - |
| dc.date.available | 2011-09-23T05:52:39Z | - |
| dc.date.issued | 2011 | en_HK |
| dc.identifier.citation | Epl, 2011, v. 95 n. 1 | en_HK |
| dc.identifier.issn | 0295-5075 | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/139612 | - |
| dc.description.abstract | Possible superconductivity in the recently discovered (Tl,K)Fe xSe 2 compounds is studied from the viewpoint of doped Mott insulator. The Mott insulating phase is examined to be preferred in the parent compound at x=1.5 due to the presence of Fe-vacancies. Partial filling of vacancies at the Fe-sites introduces electron carriers and leads to electron-doped superconductivity. By using a two-orbital Hubbard model in the strong-coupling limit, we find that the s-wave pairing is more favorable at small Hund's coupling, and dx 2-y 2-wave pairing is more favorable at large Hund's coupling. Copyright © 2011 EPLA. | en_HK |
| dc.language | eng | en_US |
| dc.publisher | Institute of Physics Publishing Ltd.. The Journal's web site is located at http://iopscience.iop.org/0295-5075 | en_HK |
| dc.relation.ispartof | EPL | en_HK |
| dc.rights | Europhysics Letters. Copyright © Institute of Physics Publishing Ltd.. | - |
| dc.subject | Superconductivity | - |
| dc.subject | Condensed matter: electrical, magnetic and optical | - |
| dc.title | Theory for superconductivity in (Tl,K)Fe xSe 2 as a doped Mott insulator | en_HK |
| dc.type | Article | en_HK |
| dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0295-5075&volume=95&issue=1, 17003&spage=&epage=&date=2011&atitle=Theory+for+superconductivity+in+(Tl,K)FexSe2+as+a+doped+Mott+insulator | - |
| dc.identifier.email | Zhang, FC: fuchun@hkucc.hku.hk | en_HK |
| dc.identifier.email | Chen, WQ: wqchen@hku.hk | en_HK |
| dc.identifier.authority | Zhang, FC=rp00840 | en_HK |
| dc.identifier.authority | Chen, WQ=rp00673 | en_HK |
| dc.description.nature | link_to_subscribed_fulltext | - |
| dc.identifier.doi | 10.1209/0295-5075/95/17003 | en_HK |
| dc.identifier.scopus | eid_2-s2.0-79960152586 | en_HK |
| dc.identifier.hkuros | 193505 | en_US |
| dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-79960152586&selection=ref&src=s&origin=recordpage | en_HK |
| dc.identifier.volume | 95 | en_HK |
| dc.identifier.issue | 1 | en_HK |
| dc.identifier.isi | WOS:000291990600021 | - |
| dc.publisher.place | United Kingdom | en_HK |
| dc.identifier.scopusauthorid | Zhou, Y=36460466600 | en_HK |
| dc.identifier.scopusauthorid | Xu, DH=7404073500 | en_HK |
| dc.identifier.scopusauthorid | Zhang, FC=14012468800 | en_HK |
| dc.identifier.scopusauthorid | Chen, WQ=36077405600 | en_HK |
| dc.identifier.issnl | 0295-5075 | - |