Next Article in Journal
Risk Assessment of Shunting Derailment Based on Coupling
Previous Article in Journal
The Symmetric Key Equation for Reed–Solomon Codes and a New Perspective on the Berlekamp–Massey Algorithm
Previous Article in Special Issue
Single-Qubit Driving Fields and Mathieu Functions
Open AccessArticle

The Symmetry of Pairing and the Electromagnetic Properties of a Superconductor with a Four-Fermion Attraction at Zero Temperature

Faculty of Pharmacy, Collegium Medicum in Bydgoszcz Nicolaus Copernicus University in Toruń, ul. Jagiellońska 13, 85-067 Bydgoszcz, Poland
Symmetry 2019, 11(11), 1358; https://doi.org/10.3390/sym11111358
Received: 20 September 2019 / Revised: 17 October 2019 / Accepted: 22 October 2019 / Published: 2 November 2019
(This article belongs to the Special Issue Quantum Information and Symmetry)
Properties of a fermion system at zero temperature are investigated. The physical system is described by a Hamiltonian containing the BCS interaction and an attractive four-fermion interaction. The four-fermion potential is caused by attractions between Cooper pairs mediated by the phonon field. In this paper, the BCS interaction is assumed to be negligible and the four-fermion potential is the only one that acts in the system. The effect of the pairing symmetry used in the four-fermion potential on some zero-temperature properties is studied. This especially concerns the electromagnetic response of the system to an external magnetic field. It turns out that, in this instance, there are serious differences between the conventional BCS system and the one investigated in this paper. View Full-Text
Keywords: superconductivity; four-fermion attraction; Meissner effect; fermion quartets superconductivity; four-fermion attraction; Meissner effect; fermion quartets
MDPI and ACS Style

Tarasewicz, P. The Symmetry of Pairing and the Electromagnetic Properties of a Superconductor with a Four-Fermion Attraction at Zero Temperature. Symmetry 2019, 11, 1358.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop