Quasiparticle-tunneling properties of Ba[sub 1[minus][ital x]]K[sub [ital x]]BiO[sub 3]/BaBi[sub 2]O[sub [ital y]]/Ba[sub 1[minus][ital x]]K[sub [ital x]]BiO[sub 3] sandwich junctions

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.14510· OSTI ID:5430027

Martin, S; Hellman, E S; Kussmaul, A; Hartford, Jr, E H ^[1]

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1. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)

Quasiparticle-tunneling measurements on sandwich junctions patterned from molecular-beam-epitaxy-grown Ba[sub 1[minus][ital x]]K[sub [ital x]]BiO[sub 3]/BaBi[sub 2]O[sub [ital y]]/Ba[sub 1[minus][ital x]]K[sub [ital x]]BiO[sub 3] trilayers are presented, where we find evidence for superconductor--insulator--normal-metal tunneling with a 2-meV gap. The subgap conductance is found to vary from a linear voltage dependence to a BCS-like voltage dependence. The temperature dependence of the zero-bias conductance and the thermal broadening of the conductance peak are studied.

• OSTI ID: 5430027
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 47:21; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT
BISMUTH OXIDES
POTASSIUM OXIDES
ELECTRIC CONDUCTIVITY
HIGH-TC SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CHALCOGENIDES
ELECTRICAL PROPERTIES
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)