M.F. von Schoenermark

Calculation of the transition temperature of high temperature and bulk superconductors

It is well known and it has been shown experimental evidence that the critical transition temperature Tc of any type of superconductor depends among other criteria on the crystal structure. Very good examples are thallium, mercury, lanthanum, tin and gallium. Also in high temperature superconductor (HTSC) cuprates a relation between the geometry of the crystal and the transition temperature has been found. This investigation of HTSCs with the model of a resonance effect between the de Broglie wavelength of paired current carrying particles and the dimension of the solid state structure forming a quantum well, has been suggested by the authors in a previous paper. In this model the dimension is given by the distance of the atoms providing the current carrying particles and at the same time the structure acts as a resonator stimulating a coherent phase transition from an electron or particle gas to a condensate.