Low Energy Spin Excitations in Iron-Based Superconductors in a Minimum Single Band Model

2016 ◽  
Vol 22 (2) ◽  
pp. 327-330
Author(s):  
Sushree Sangita Jena ◽  
G. C. Rout
Keyword(s):  
Single Band ◽  
Low Energy ◽  
Band Model ◽  
Iron Based Superconductors ◽  
Spin Excitations ◽  
Iron Based

scholarly journals The Role of Orbital Nesting in the Superconductivity of Iron-Based Superconductors

2021 ◽  
Vol 6 (3) ◽  
pp. 34
Author(s):  
Raquel Fernández-Martín ◽  
María J. Calderón ◽  
Laura Fanfarillo ◽  
Belén Valenzuela
Keyword(s):  
Low Energy ◽  
Gap Functions ◽  
Momentum Dependence ◽  
Iron Based Superconductors ◽  
Spin Excitations ◽  
The Common ◽  
Iron Based ◽  
Orbital Character ◽  
Key Parameter

We analyze the magnetic excitations and the spin-mediated superconductivity in iron-based superconductors within a low energy model that operates in the band basis, but fully incorporates the orbital character of the spin excitations. We show how the orbital selectivity, encoded in our low energy description, simplifies substantially the analysis and allows for analytical treatments, while retaining all the main features of both spin excitations and gap functions computed using multiorbital models. Importantly, our analysis unveils the orbital matching between the hole and electron pockets as the key parameter to determine the momentum dependence and the hierarchy of the superconducting gaps, instead of the Fermi surface matching, as in the common nesting scenario.

scholarly journals Spin excitations in hole-overdoped iron-based superconductors

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
K. Horigane ◽  
K. Kihou ◽  
K. Fujita ◽  
R. Kajimoto ◽  
K. Ikeuchi ◽  
...  
Keyword(s):  
Iron Based Superconductors ◽  
Spin Excitations ◽  
Iron Based
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