scholarly journals Complete renormalization group calculation up to two-loop order of an effective two-band model for iron-based superconductors

2011 ◽  
Vol 96 (1) ◽  
pp. 17006 ◽  
Author(s):  
V. S. de Carvalho ◽  
H. Freire
Keyword(s):  
Renormalization Group ◽  
Band Model ◽  
Loop Order ◽  
Iron Based Superconductors ◽  
Iron Based ◽  
Renormalization Group Calculation ◽  
Two Band Model

Superconductivity in Two-Band Model by Renormalization Group Approach

2003 ◽  
Vol 17 (18n20) ◽  
pp. 3373-3376
Author(s):  
Hidemi Nagao ◽  
Hiroyuki Kawabe ◽  
Sergei P. Kruchinin ◽  
Kizashi Yamaguchi
Keyword(s):  
Renormalization Group ◽  
Gap Function ◽  
Superconducting Gap ◽  
Band Model ◽  
Group Approach ◽  
Renormalization Group Approach ◽  
Two Band Model

We investigate the superconductivity in a two-band model by using the renormalization group approach. We discuss the superconducting gap function in the two-band model.

Theoretical Studies on Many-Band Effects in Superconductivity by Using Renormalization Group Approach

2003 ◽  
Vol 17 (10n12) ◽  
pp. 423-431 ◽  
Author(s):  
Hidemi Nagao ◽  
Hiroyuki Kawabe ◽  
Sergei P. Kruchinin ◽  
Dirk Manske ◽  
Kizashi Yamaguchi
Keyword(s):  
Renormalization Group ◽  
Phase Diagrams ◽  
Electron Interaction ◽  
Band Model ◽  
Theoretical Studies ◽  
Group Approach ◽  
Renormalization Group Approach ◽  
Two Band Model

We present a renormalization equations for two-band superconductivity by using a two-band model and present phase diagrams for the two-band superconductivity. In the framework of two-band model, the present results predict that superconductivity appears, even if electron-electron interaction is positive. We discuss the possibility of a cooperative mechanism in the two-band superconductivity in relation to high-Tc superconductivity.

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