Superconductivity of one-unit-cell thick YBa sub 2 Cu sub 3 O sub 7 thin film

Journal Article · Mon Sep 02 00:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.1362· OSTI ID:5236791

Terashima, T; Shimura, K; Bando, Y ^[1]; Matsuda, Y; Fujiyama, A; Komiyama, S ^[2]

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1. Institute for Chemical Research, Kyoto University, Uji611 (Japan)
2. Department of Pure and Applied Sciences, University of Tokyo, 381 Komaba, Meguro-ku, Tokyo 153 (Japan)

We have found for the first time that superconductivity can occur in a one-unit-cell-thick layer of YBa{sub 2}Cu{sub 3}O{sub 7} (YBCO). The layer is grown, while monitoring with RHEED oscillations, on a superconducting PrBa{sub 2}Cu{sub 3}O{sub 7} (PrBCO) buffer layer and covered by a PrBCO layer by reactive evaporation. A reduction of the onset temperature is found to be mainly due to a decrease of the hole carriers but not due to the absence of interlayer couplings. This covering PrBCO layer has been found to provide the YBCO layer with carrier holes sufficient to induce superconductivity.

• OSTI ID: 5236791
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:10; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CARRIER DENSITY
CHALCOGENIDES
COPPER COMPOUNDS
CUPRATES
FILMS
HIGH-TC SUPERCONDUCTORS
HOLES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES