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Proceedings Paper

Nonphonon mechanism of high-temperature superconductivity in cuprates
Author(s): Y. M. Malozovsky; Jiang-Di Fan
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Paper Abstract

Superconductivity and metal-insulator phase transition in a layered 2D electron liquid, taking into account electron-electron correlation effects and spin density fluctuations, have been considered by means of the Fermi-liquid approach. It is shown that the electron-electron interaction mediated by the virtual charge density excitations in a layered 2D correlated Fermi liquid has the short-range attractive character at the intermediate electron density. It is found that such interaction leads to superconductivity at the intermediate density of carriers and the phase transition to the insulating state with the decrease of the density. The dependence of transition temperature Tc on the doping density, interlayer spacing and dielectric constant of the cuprate under investigation is also shown. A optimum Tc for a single-layer cuprate and the possibility to reach room temperature superconductivity are predicted as well. This indicates a direction to synthesize the compounds with superconductivity at higher temperature.

Paper Details

Date Published: 10 August 1994
PDF: 13 pages
Proc. SPIE 2158, Oxide Superconductor Physics and Nano-Engineering, (10 August 1994); doi: 10.1117/12.182692
Show Author Affiliations
Y. M. Malozovsky, Southern Univ. and A&M College (United States)
Jiang-Di Fan, Southern Univ. and A&M College (United States)


Published in SPIE Proceedings Vol. 2158:
Oxide Superconductor Physics and Nano-Engineering
Davor Pavuna; Ivan Bozovic, Editor(s)

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