Bomze Y. Structure and superconductivity of the semiconducting heterostructures of lead, tin and rare-earth metals chalcogenides

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0405U002706

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

07-06-2005

Specialized Academic Board

Д.64.175.03

Essay

Object - multilayered semiconducting heterostructures of lead, tin and rare-earth metals chalcogenides; Goal - finding out of the mechanism, that leads to appearance of the superconducting properties, searching new superconducting semiconducting heterostructures; Methods - measurement of resistive transitions and critical fields, X-ray аnalysis and electron microscopy studies, the theoretical analysis; Results - it is shown, that the elastic deformations results the zone inversion in narrowgap semiconductor near the interfaces and the metallization of the last, which causes the appearance of superconducting properties; Novelty - the superconductivity of five semiconducting heterostructures is observed for the first time, a correlation between the critical temperature and the period of misfit dislocations grid is find out, calculation of the zone inversion in approach of the anisotropic theory of elasticity with taking into account of nonuniformity of layered structure is carried out; the Scope - creating of the superconducting semiconductor heterostructures with the known properties.

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