Titlebook: High-Tc Superconductivity; Experiment and Theor Aleksandr S. Davydov,Vadim M. Loktev Conference proceedings 1992 Springer-Verlag Berlin Hei

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Dynamics of the Mixed State in YBa2Cu3O7 Epitaxial Films, regimes using I-V characteristics of the films at different magnetic fields results in conclusion that so called”easy vortex slip channels” formed along planar defects play an important role in dynamics of the mixed state. Vortices driven by Lorentz force preferably move along these channels, at le

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Energy Band Structure of Strongly Correlated Electrons in a CuO2 Layer, top of the valence band has a minimum at the . point, indicating the existence of the multi-valley Fermi surface in the doped La.Sr.CuO.. The origin of the Fermi liquid behavior in the narrow quasi-particle bands is discussed.

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The Nature of Unusual Magnetic Properties of Nd,CuO, and Tetragonal Modification of YBa,Cu,O,,n equivalent sites of copper ions Cu(1) and Cu(2). Mainly it conserns to Nd.CuO. to which the main attention will be paid in this work. The consideration is carried out in the frames of symmetry approach.

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The Specific Geometry of the CuO2-Plane and Electronic Properties of High-Temperature Superconductoof carrier scattering by the spin fluctuations of the copper subsystem lead to a sharp decrease of the energy gap in the excitation spectrum. The theoretical results are compared with experimental data.

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High-Temperature Superconductivity,ting state at temperatures . . close to 90 K. Several months later new superconductors with . . > 30 K were synthesized almost simultaneously at different laboratories in the USA, Japan, the USSR and other countries. These superconductors were called as high-. . superconductors.