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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2002, Volume 76, Issue 3, Pages 219–222
(Mi jetpl2889)
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This article is cited in 14 scientific papers (total in 14 papers)
CONDENSED MATTER
Possible mechanism of superconductivity in the CuO-Cu interface
I. I. Amelin Ogarev Mordovia State University
Abstract:
Apparently, a two-dimensional CuO lattice is formed on the surface of copper oxide in the CuO-Cu interface. This lattice consists of Cu$^{2+}$ and O$^{1-}$ ions, which form a narrow, partially filled two-dimensional band. In this case, local electron pairs (LEPs) can form in the oxygen subsystem as a result of the fulfillment of the Shubin-Vonsovskii conditions. A crude estimate of the formation temperature of LEPs gives $T^*\sim10^4\,$K. At the concentration in the interface layer $n\sim1.6\times10^{20}\,$cm$^{-3}$ and the effective mass of carriers $m^*\sim m_e$, the onset temperature of Bose-Einstein condensation may take a value of $T_c\sim 1000\,$K. The estimate obtained for the temperature $T_c$ corresponds to the experimental value by an order of magnitude.
Received: 13.05.2002 Revised: 08.07.2002
Citation:
I. I. Amelin, “Possible mechanism of superconductivity in the CuO-Cu interface”, Pis'ma v Zh. Èksper. Teoret. Fiz., 76:3 (2002), 219–222; JETP Letters, 76:3 (2002), 185–188
Linking options:
https://www.mathnet.ru/eng/jetpl2889 https://www.mathnet.ru/eng/jetpl/v76/i3/p219
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