Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Nourafkan, Reza"'
Publikováno v:
Phys. Rev. B 106, 064513 (2022)
The superconducting order parameter of strontium ruthenate is the center of a lasting puzzle calling for theoretical studies that include the seldom-considered effects of spin-orbit coupling and the frequency-dependence of the order parameters. Here
Externí odkaz:
http://arxiv.org/abs/2201.08918
The lasting puzzle of the superconducting order parameter of Sr$_2$RuO$_4$ calls for theoretical studies that include seldom-considered effects. Here we include spin-orbit coupling effects on the electronic structure and then solve the linearized Eli
Externí odkaz:
http://arxiv.org/abs/2201.08917
Publikováno v:
Phys. Rev. Lett. 123, 217005 (2019)
Although correlated electronic-structure calculations explain very well the normal state of Sr$_2$RuO$_4$, its superconducting symmetry is still unknown. Here we construct the spin and charge fluctuation pairing interactions based on its correlated n
Externí odkaz:
http://arxiv.org/abs/1808.02527
Autor:
Brown, Peter T., Mitra, Debayan, Guardado-Sanchez, Elmer, Nourafkan, Reza, Reymbaut, Alexis, Hébert, Charles-David, Bergeron, Simon, Tremblay, A. -M. S., Kokalj, Jure, Huse, David A., Schauss, Peter, Bakr, Waseem S.
Publikováno v:
Science, 363, 379-382 (2019)
Charge transport is a revealing probe of the quantum properties of materials. Strong interactions can blur charge carriers resulting in a poorly understood "quantum soup". Here we study the conductivity of the Fermi-Hubbard model, a testing ground fo
Externí odkaz:
http://arxiv.org/abs/1802.09456
Autor:
Nourafkan, Reza, Marsiglio, Frank
Publikováno v:
Phys. Rev. B 84, 075133 (2011)
We use the embedding approach for a dynamical mean-field method to investigate the electronic properties of a semi-infinite two band Hubbard model at half- and quarter-filling. Two effects determine the degree of correlation at the surface: first, th
Externí odkaz:
http://arxiv.org/abs/1107.1734
Autor:
Nourafkan, Reza, Marsiglio, Frank
Publikováno v:
Phys. Rev. B 83, 155116 (2011)
The physics of doping a Mott insulator is investigated in the presence of a solid-vacuum interface. Using the embedding approach for dynamical mean field theory we show that the change in surface spectral evolution in a doped Mott insulator is driven
Externí odkaz:
http://arxiv.org/abs/1103.0965
Publikováno v:
Phys. Rev. B 82, 115127 (2010)
We investigate the possibility that the surface of a strongly coupled electron-phonon system behaves differently from the bulk when the relevant parameters are inhomogeneous due to the presence of the interface. We consider parameter variations which
Externí odkaz:
http://arxiv.org/abs/1009.4222
The effect of a solid-vacuum interface on the properties of a strongly coupled electron-phonon system is analyzed using dynamical mean-field theory to solve the Holstein model in a semi-infinite cubic lattice. Polaron formation is found to occur more
Externí odkaz:
http://arxiv.org/abs/0905.1379
We investigate the bipolaronic crossover and the pairing transition for a two-orbital model with Jahn-Teller coupling to a two-fold degenerate phonon mode. The evolution from weak to strong coupling is reminiscent of the behavior of the single-band H
Externí odkaz:
http://arxiv.org/abs/0904.1711
Autor:
Nourafkan, Reza, Nafari, Nasser
We study the Kondo lattice model which is modified by the Holstein term, involving both the Kondo exchange coupling and the electron-phonon coupling constants, characterized by $J$ and $g$, respectively. The model is solved by employing the dynamical
Externí odkaz:
http://arxiv.org/abs/0806.2437