Abstract
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.
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Acknowledgments
This work has been partially supported by CONACyT 131596, UNAM IN106714 and IN113714. Computations were performed at Miztli of DGTIC-UNAM.
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Wang, C., Galván, C.G. & Pérez, L.A. Application of Bogoliubov-de Gennes equations to vortices in Hubbard superconductors. MRS Online Proceedings Library 1753, 13–17 (2015). https://doi.org/10.1557/opl.2015.158
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DOI: https://doi.org/10.1557/opl.2015.158