The ion pairs and superconducting bosons

TL;DR

This paper proposes a theory where ion pairs in a lattice create an attractive interaction leading to electron pairing, with the number of superconducting bosons remaining constant across the phase, challenging traditional views.

Contribution

It introduces a novel mechanism involving ion pairs and their condensate fraction that sustains superconductivity without changing the number of bosons.

Findings

Ion pairs are formed by repulsive interactions acting as covalent bonds.

Electron pairing is mediated by effective attraction from ion-electron scattering.

The number of superconducting bosons remains unchanged in the superconducting phase.

Abstract

First, it is shown that the creation of the spinless ion pairs in the lattice, which are hold by the binding with neighbor ion pairs together regarded as covalent. These ion pairs are created by the repulsive potential interaction of two ions which is bound as linear oscillator. The repulsive S-wave scattering between ion pairs and electrons is transformed to the attractive effective interaction between electrons which leads to a creation of electron pairs by a binding energy depending on the condensate fraction of ion pairs $\frac{N_0}{N}$. In this respect, the absence of ion pairs in the condensate destroys a binding energy of electron pairs and in turn so-called superconductimg phase. As new result presented theory is that the number of the superconducting bosons is not changed in the superconducting phase.