Abstract
AbstractA new attitude towards the problem of high‐temperature superconductivity is suggested. The main attention is focused on the principal differences between electrodynamics of high‐temperature and low‐temperature superconducting state. While describing the electromagnetic field in high‐temperature superconductors (HTSC) it is necessary to take into account both conducting currents and displacement currents in general case. It is shown that the transition of HTSC into the superconducting state is accompanied by its spontaneous polarization, so that the external electric field is completely compensated inside the superconductor volume. The Messiner magnetic effect in HTSC is a secondary one. It is found that the excitation spectrum of HTSC has a multi‐gap structure. Estimations of all fundamental parameters of HTSC are given. Comparison of theoretical with experimental results shows good agreement. Some aspects of anisotropy and high‐frequency properties of HTSC are discussed.
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