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Article: Pseudogap and Fermi-arc evolution in the phase-fluctuation scenario

TitlePseudogap and Fermi-arc evolution in the phase-fluctuation scenario
Authors
Issue Date2010
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2010, v. 82 n. 5 How to Cite?
Abstract
Pseudogap phenomena and the formation of Fermi arcs in underdoped cuprates are numerically studied in the presence of phase fluctuations that are simulated by an XY model. Most importantly the spectral function for each Monte Carlo sample is calculated directly and efficiently by the Chebyshev polynomials without having to diagonalize the fermion Hamiltonian, which enables us to handle a system large enough to achieve sufficient momentum/energy resolution. We find that the momentum dependence of the energy gap is identical to that of a pure d -wave superconductor well below the Kosterlitz-Thouless (KT) transition temperature (TKT) while displays an upturn deviation from cos kx -cos ky with increasing temperature. An abrupt onset of the Fermi arcs is observed above TKT and the arc length exhibits a similar temperature dependence to the thermally activated vortex excitations. © 2010 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/125267
ISSN
2013 Impact Factor: 3.664
2013 SCImago Journal Rankings: 2.143
ISI Accession Number ID
Funding AgencyGrant Number
RGC of Hong KongHKU7055/09P
HKUST3/CRF/09
HKU
Natural Science Foundation of China10674179
Funding Information:

We thank T. K. Lee and Y. Chen for helpful discussions, and A. Tsvelik for communication. The work was supported by the RGC of Hong Kong under Grants No. HKU7055/09P and No. HKUST3/CRF/09, the URC fund of HKU, the Natural Science Foundation of China under Grant No. 10674179.

References
Grants

 

Author Affiliations
  1. The University of Hong Kong
  2. Renmin University of China
DC FieldValueLanguage
dc.contributor.authorHan, Qen_HK
dc.contributor.authorLi, Ten_HK
dc.contributor.authorWang, ZDen_HK
dc.date.accessioned2010-10-31T11:21:02Z-
dc.date.available2010-10-31T11:21:02Z-
dc.date.issued2010en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2010, v. 82 n. 5en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/125267-
dc.description.abstractPseudogap phenomena and the formation of Fermi arcs in underdoped cuprates are numerically studied in the presence of phase fluctuations that are simulated by an XY model. Most importantly the spectral function for each Monte Carlo sample is calculated directly and efficiently by the Chebyshev polynomials without having to diagonalize the fermion Hamiltonian, which enables us to handle a system large enough to achieve sufficient momentum/energy resolution. We find that the momentum dependence of the energy gap is identical to that of a pure d -wave superconductor well below the Kosterlitz-Thouless (KT) transition temperature (TKT) while displays an upturn deviation from cos kx -cos ky with increasing temperature. An abrupt onset of the Fermi arcs is observed above TKT and the arc length exhibits a similar temperature dependence to the thermally activated vortex excitations. © 2010 The American Physical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B: Condensed Matter and Materials Physics. Copyright © American Physical Society.-
dc.titlePseudogap and Fermi-arc evolution in the phase-fluctuation scenarioen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=82&issue=5, article no. 052503&spage=&epage=&date=2010&atitle=Pseudogap+and+Fermi-arc+evolution+in+the+phase-fluctuation+scenario-
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1103/PhysRevB.82.052503en_HK
dc.identifier.scopuseid_2-s2.0-77957295360en_HK
dc.identifier.hkuros180173en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77957295360&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume82en_HK
dc.identifier.issue5en_HK
dc.identifier.isiWOS:000281294700002-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectQuantum Order in Novel Materials: Superconductivity and Topological Order-
dc.relation.projectQuantum Order in Novel Materials: Superconductivity and Topological Order-
dc.relation.projectQuantum Order in Novel Materials: Superconductivity and Topological Order-
dc.identifier.scopusauthoridHan, Q=7202485348en_HK
dc.identifier.scopusauthoridLi, T=42861660200en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK

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