Abstract
We investigate why normal electrons in superconductors have no resistance. Under the same conditions, the band gap is reduced to zero as well, but normal electrons at superconducting states are condensed into this virtual energy band gap.
Highlights
The conventional properties of superconductors different from normal materials are classified as no resistance below a critical temperature and no magnetic field inside bulk
The linear dependence of resistivity on temperature, the very high superconducting transition temperatures, and the origin of the pseudo-gap, among other things, all still require clearer explanations if a full consensus is to be achieved on a theoretical model for high-temperature superconductors (HTSCs)
Superconductors and the Bose–Einstein condensation of the superconducting electrons is proportional to the virtual energy band gap that remains with normal electrons
Summary
The conventional properties of superconductors different from normal materials are classified as no resistance below a critical temperature and no magnetic field inside bulk. The linear dependence of resistivity on temperature, the very high superconducting transition temperatures, and the origin of the pseudo-gap, among other things, all still require clearer explanations if a full consensus is to be achieved on a theoretical model for HTSCs. Some theoretical approaches to HTSCs are still under development, in a Heisenberg antiferromagnetic model [8] that uses the formalism of Green’s function and in the attractive Hubbard model [9], which makes use of dynamical mean field theory. We are satisfied with the assumption itself, the superconducting electrons and the normal-state electrons of finite resistance act in a parallel circuit connection to make the total resistance of the circuit tend to zero [11,12] This postulate has not yet been confirmed.
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