Cet article a un erratum : [erratum]

J. Phys. I France
Volume 4, Numéro 3, March 1994
Page(s) 361 - 365
DOI https://doi.org/10.1051/jp1:1994100
DOI: 10.1051/jp1:1994100
J. Phys. I France 4 (1994) 361-365

Short Communication

High ${\rm T_c}$ superconductivity by quantum confinement

A. Bianconi and M. Missori

Università di Roma, Dipartimento di Fisica, P.A. Moro 2, 00185 Roma, Italy

(Received 21 December 1993, accepted 4 January 1994)

We report the results of a careful experimental investigation of the Cu site configurations in the CuO 2 plane of Bi 2Sr 2CaCu 2O 8+y (Bi2212) showing that the quasi 2D Fermi liquid is confined in the stripes of width L with a superlattice period $\lambda_p = 4.65a$. The high T c superconductivity is stabilized at high temperature by tuning the Fermi energy of the 2D electron gas to the quantum resonance $k_{F_y} = 2\pi/L$. The confinement of a 3D electron gas in quantum wires can be realized by synthetizing Bi-Ca-Sr-Cu-0 systems with some adjacent CuO 2 layers forming a metallic slab of thickness H. In this case the amplification of the critical temperature is assigned to quantization of the wavevectors along both the y and z directions satisfying the $k_{F_y} = 2\pi/L$ and $k_{F_z} = m\pi/H$ conditions.

© Les Editions de Physique 1994

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.