Physics – Condensed Matter – Superconductivity
Scientific paper
2012-04-26
O.P Ledenyov, Problems of Atomic Science and Technology (VANT), no. 1(17), 48 (2008) http://vant.kipt.kharkov.ua/ARTICLE/VAN
Physics
Condensed Matter
Superconductivity
5 pages, 1 figure
Scientific paper
The calculation of spatial structure of a quantum intermediate state in high pure type I superconductors in external magnetic field at low temperatures is completed. The theoretical model of thermodynamics of intermediate state in type I superconductors was proposed by Andreev. It is shown, that in the quantum case, the period of structure of quantum intermediate state appears to be significantly shorter and it has different dependences on the magnetic field H and temperature T in comparison with the classical intermediate Landau state. The decrease of thickness of normal layers results in the increase of characteristic distance between the quantum Andreev levels of electronic excitations, and leads to the transition to the quantum intermediate state from the classical intermediate Landau state, which is realized at the higher temperatures T~1K. The comparison of the computed data with the experimental results in the researched case of high pure Gallium single crystal is made.
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