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- W2022864532 abstract "We have found that the structure of the CuO<SUB>2</SUB> plane of Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>8+y</SUB> (Bi2212) is anisotropic. Experimental investigation of the Cu site configurations in the CuO<SUB>2</SUB> plane of Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>8+y</SUB> (Bi2212) by XANES and EXAFS shows that the quasi 2D Fermi liquid is confined in a superlattice of quantum stripes of width L running in the x direction. We have found that the recently proposed mechanism to rise the critical temperature by the confinement of an electron gas in superlattices and tuning the Fermi level to a shape resonance is verified. In fact the component of the Fermi wavevector k<SUB>Fy</SUB> in the y direction perpendicular satisfies the condition k<SUB>Fy</SUB> equals 2(pi) /L in Bi2212. This resonance gives an amplification of the critical temperature T<SUB>c</SUB> by a factor of order of 5 in comparison with the critical temperature of the homogeneous CuO<SUB>2</SUB> plane estimated to be about 15 - 20 K." @default.
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- W2022864532 date "1994-08-10" @default.
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- W2022864532 title "Polaron size and ordering by x-ray absorption: the quantum confinement of a 2D Fermi liquid giving high-T c superconductivity" @default.
- W2022864532 doi "https://doi.org/10.1117/12.182701" @default.
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