Superconductivity in epitaxial Bi sub 2 Sr sub 2 CuO sub 6 /Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 superlattices: The superconducting behavior of ultrathin cuprate slabs

Journal Article · Sat Feb 01 00:00:00 EST 1992 · Journal of Superconductivity; (United States)

DOI:https://doi.org/10.1007/BF00617991· OSTI ID:7207047

Bozovic, I; Eckstein, J N; Klausmeier-Brown, M E; Virshup, G ^[1]

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1. Varian Research Center, Palo Alto, CA (United States)

Utilizing atomic layer-by-layer molecular beam epitaxy (ALL-MBE), the authors have synthesized a series of high-quality superlattices in which ultrathin slabs (one-half unit cell thick) of the high-{Tc} superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} alternate with up to five such layers of the low-{Tc} Bi{sub 2}Sr{sub 2}Cu{sub 1}O{sub 6}phase. In all these superlattices they found {Tc} to be essentially equal to that of the high-{Tc} Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} phase itself, which indicates that this cuprate is a 2D superconductor insofar as the interslab coupling plays at best a secondary role. Furthermore, it is demonstrated that {Tc} need not be reduced at heterostructure interfaces.

• OSTI ID: 7207047
• Journal Information: Journal of Superconductivity; (United States), Vol. 5:1; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
SUPERCONDUCTIVITY
CALCIUM OXIDES
COPPER OXIDES
STRONTIUM OXIDES
SUPERLATTICES
HETEROJUNCTIONS
HIGH-TC SUPERCONDUCTORS
INTERFACES
LAYERS
SLABS
TRANSITION TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SEMICONDUCTOR JUNCTIONS
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360607* - Other Materials- Superconducting Properties- (1992-)