Application of Bogoliubov-de Gennes equations to vortices in Hubbard superconductors

Autor: César G. Galván, Chumin Wang, Luis A. Pérez
Rok vydání: 2015
Předmět:
Zdroj: MRS Proceedings. 1753
ISSN: 1946-4274
0272-9172
Popis: In this work, the formation of d-wave superconducting magnetic vortex is studied within the Bogoliubov-de Gennes formalism and the generalized Hubbard model, which leads to 2N2 coupled self-consistent equations for a supercell of N×N atoms. These equations determine the spatial variation of the superconducting gap as a function of the electron concentration and electron-electron interactions. The results show that the superconducting states induced by the correlated hopping (Δt3) are more sensitive to the presence of magnetic field than those induced by attractive nearest-neighbor interaction (V). Furthermore, we calculate the electronic specific heat as a function of the temperature for a given applied magnetic field, whose behavior has a qualitative agreement with experimental data.
Databáze: OpenAIRE
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