Search Results - MEAN field theory

1

Electronic Resource

Hole-s_± State Induced by Coexisting Ferro- and Aniferromagnetic and Aniferro-orbital Fluctuations in Iron Pnictides

Index Terms: dynamical mean-field theory, iron-based superconductor, magnetic fluctuation, orbital fluctuation, 5-orbital Hubbard model, 論文(Article), Journal Article, text

URL: http://hdl.handle.net/10191/49479
http://journals.jps.jp/doi/abs/10.7566/JPSJ.85.114709
http://journals.jps.jp/doi/abs/10.7566/JPSJ.85.114709
info:doi/10.7566/JPSJ.85.114709

2

Electronic Resource

Metal-insulator Transition and Superconductivity in the Two-orbital Hubbard-Holstein Model for Iron-based Superconductors

Index Terms: iron pnictide superconductor, multi-orbital system, Jahn-Teller electron-phonon coupling, orbital fluctuation, magnetic fluctuation, dynamical mean-field theory, 論文(Article), Journal Article, text

URL: http://hdl.handle.net/10191/47678
http://journals.jps.jp/doi/abs/10.7566/JPSJ.83.044711
http://journals.jps.jp/doi/abs/10.7566/JPSJ.83.044711
info:doi/10.7566/JPSJ.83.044711

3

Electronic Resource

Local correlation effects on the s _±-and s_<++>-wave superconductivities mediated by magnetic and orbital fluctuations in the 5-orbital Hubbard model for iron pnictides

Index Terms: dynamical mean-field theory, iron-based superconductor, spin fluctuation, orbital fluctuation, 5-orbital Hubbard model, 論文(Article), Journal Article, text

URL: http://hdl.handle.net/10191/47676
http://journals.jps.jp/doi/abs/10.7566/JPSJ.82.123712
http://journals.jps.jp/doi/abs/10.7566/JPSJ.82.123712
info:doi/10.7566/JPSJ.82.123712

4

Electronic Resource

Heavy-Electron Formation and Polaron-Bipolaron Transition in the Anharmonic Holstein Model

Index Terms: heavy electron, anharmonicity, rattling, bipolaron, dynamical mean-field theory, 論文(Article), Journal Article, text

URL: http://hdl.handle.net/10191/26827
http://journals.jps.jp/doi/abs/10.1143/JPSJ.81.044701
http://journals.jps.jp/doi/abs/10.1143/JPSJ.81.044701
info:doi/10.1143/JPSJ.81.044701

5

Electronic Resource

Dynamical mean-field study of the heavy-fermion state in the multi-orbital Anderson lattice model coupled with Jahn-Teller phonons

Index Terms: Two-orbital Anderson lattice model, Coulomb interaction, Electron–phonon coupling, Heavy fermion, Dynamical mean-field theory, 論文(Article), Journal Article, text

URL: http://hdl.handle.net/10191/26906
info:doi/10.1016/j.physb.2007.10.047

6

Electronic Resource

Critical Behaviour near the Mott Metal-Insulator Transition in a Two-band Hubbard Model

Index Terms: Mott transition, metal-insulator transition, two-band Hubbard model, dynamical mean-field theory, infinite dimensions, 論文(Article), Journal Article, text

URL: http://hdl.handle.net/10191/26838
http://journals.jps.jp/doi/abs/10.1143/JPSJ.70.2989
http://journals.jps.jp/doi/abs/10.1143/JPSJ.70.2989
info:doi/10.1143/JPSJ.70.2989

7

Electronic Resource

Renormalization Group Approaches to Strongly Correlated Electron Systems

Index Terms: Renormalization, strongly correlated electron systems, dynamical mean field theory, 論文(Article), Journal Article, text

URL: http://hdl.handle.net/10191/26873
info:doi/10.1142/S0217979201006367