Constraining forces causing the Meissner effect
arXiv:1706.08737 · doi:10.4236/jmp.2017.88074
Abstract
As shown in former papers, the nonadiabatic Heisenberg model presents a novel mechanism of Cooper pair formation which is not the result of an attractive electron-electron interaction but can be described in terms of quantum mechanical constraining forces. This mechanism operates in narrow, roughly half-filled superconducting bands of special symmetry and is evidently responsible for the formation of Cooper pairs in all superconductors. Here we consider this new mechanism within an outer magnetic field. We show that in the magnetic field the constraining forces produce Cooper pairs of non-vanishing total momentum with the consequence that an electric current flows within the superconductor. This current satisfies the London equations and, consequently, leads to the Meissner effect. This theoretical result is confirmed by the experimental observation that all superconductors, whether conventional or unconventional, exhibit the Meissner effect.
References in corpus (6)
- The origin of the Meissner effect in new and old superconductors
- Nonadiabatic extension of the Heisenberg model
- Group theory of Wannier functions providing the basis for a deeper understanding of magnetism and superconductivity
- Superconducting band stabilizing superconductivity in MgB2
- Stability of the superconducting state in YBa_2Cu_3O_7
- Superconductivity interpreted as k-space magnetism