Tunneling study of Bi sub 2 Pb sub 0. 4 Sr sub 2 Ca sub 2. 5 Cu sub 3. 5 O sub y with T sub c =105 K
- Department of Physics, Saga University Saga 840, (Japan) Faculty of Science and Engineering, Saga University, Saga 840, Japan (JP)
- Institut de Physique Experimentale, Universite de Lausanne, CH-1015 Lausanne-Dorigny, Switzerland (CH)
Pb-SiO-Bi{sub 2}Pb{sub 0.4}Sr{sub 2}Ca{sub 2.5}Cu{sub 3.5}O{sub {ital y}} junctions were fabricated on the high-{ital T}{sub {ital c}} Bi system ({ital T}{sub {ital c}}=105 K) by successively depositing SiO and then Pb in a vacuum. The {ital V}-{ital dI}/{ital dV} characteristic was measured at temperatures between 4.3 and 112.9 K and was found to have two clear peaks near bias voltages of {plus minus}35 mV. From the bias voltage difference between two bias voltages, at which the value of ({ital dI}/{ital dV}){sub {ital s}}/({ital dI}/{ital dV}){sub {ital n}} is equal to 1, the superconducting-gap energy 2{Delta} at 4.3 K was estimated as 49.6 meV and the coupling strength factor resulted in 2{Delta}{sub 0}/{ital kT}{sub {ital c}}=5.5.
- OSTI ID:
- 7122540
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:10; ISSN PRBMD; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ENERGY GAP
ENERGY RANGE
EV RANGE
JUNCTIONS
LEAD COMPOUNDS
LEAD OXIDES
MILLI EV RANGE
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING JUNCTIONS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT