Non-magnetic tight binding disorder effects in the γ sheet of Sr2RuO4



Document title: Non-magnetic tight binding disorder effects in the γ sheet of Sr2RuO4
Journal: Revista mexicana de física
Database: PERIÓDICA
System number: 000460812
ISSN: 0035-001X
Authors: 1
1
2
Institutions: 1Universidad de Los Andes, Departmento de Física, Mérida. Venezuela
2Dagestan State University, Department of Physics, Makhachkala, Daguestan. Rusia
Year:
Season: Mar-Abr
Volumen: 68
Number: 2
Country: México
Language: Inglés
Document type: Artículo
Approach: Analítico, teórico
English abstract Inspired by the physics of the Miyake - Narikiyo model (MN) for superconductivity in the γ sheet of Sr2RuO4, we set out to investigate numerically the behavior caused by a non-magnetic disorder in the imaginary part of the elastic scattering matrix for an anisotropic tightbinding model. We perform simulations by going from the Unitary to the Born scattering limit, varying the parameter c which is inverse to the strength of the impurity potential. It is found that the unitary and intermedia limits persist for different orders of magnitude in simulating the disorder concentration. Subsequently and in order to find the MN tiny gap, we perform a numerical study of the unitary limit as a function of disorder concentration, to find the tiny anomalous gap
Disciplines: Física y astronomía
Keyword: Física de materia condensada,
Superconductividad no convencional,
Desorden no magnético,
Sección transversal de dispersión elástica,
Pequeña brecha
Keyword: Condensed matter physics,
Unconventional superconductivity,
Non-magnetic disorder,
Elastic scattering cross-section,
Tiny gap
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