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Some Aspects of Long Range Interaction on Disordered Superconductivity

Swarup, Swetlana (2019) Some Aspects of Long Range Interaction on Disordered Superconductivity. Masters thesis, Indian Institute of Science Education and Research Kolkata.

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    Abstract

    In the present thesis, we aim to study the effects of a long range interaction, in particular a repulsive Yukawa potential, on a disordered s-wave superconductor. In such a case, there are two global competing orders- the charge density wave and superconductivity. With this motivation, normal state problem is studied where the superconductivity is turned off by means of a mean-field theory as a starting point. Thus, charge ordering is investigated in both Hartree and Fock channels. The 2D parameter space of the disorder strength s and range of interaction r₀ is explored to understand how it affects the charge density wave. Our aim is to capture purely the effects of a long range interaction.

    Item Type: Thesis (Masters)
    Additional Information: Supervisor : Prof. Amit Ghosal
    Uncontrolled Keywords: Attractive Hubbard Model; Extended Hubbard Model; Mean Field Decomposition; Physics of Disorder; Range of Interaction; Yukawa Potential
    Subjects: Q Science > QC Physics
    Divisions: Department of Physical Sciences
    Depositing User: IISER Kolkata Librarian
    Date Deposited: 20 Dec 2019 16:06
    Last Modified: 20 Dec 2019 16:07
    URI: http://eprints.iiserkol.ac.in/id/eprint/891

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