Tunneling spectroscopy and the electron-phonon interaction in Ba sub 1-x K sub x BiO sub 3

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:5457464

Zasadzinski, J F; Tralshawala, N; Timpf, J; Hinks, D G; Dabrowski, B; Mitchell, A W; Richards, D R ^[1]

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1. Illinois Inst. of Tech., Chicago, IL (USA)

Tunneling spectroscopy measurements have been performed on bulk samples of Ba{sub 1-x}K{sub x}BiO{sub 3} for the compositions, x=0.375, 0.4 and 0.5, using the natural, surface oxide as the tunnel barrier. The data show structures which are characteristic of phonon effects as seen in conventional superconductors and suggest that {alpha}{sup 2}F({omega}) is strongest for the high frequency optical modes. These results are consistent with other experiments and with recent microscopic calculations which indicate that phonon-mediated pairing is responsible for the superconductivity in this compound. 21 refs., 6 figs., 1 tab.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5457464
• Report Number(s): CONF-890939-2; ON: DE90002842
• Resource Relation: Conference: International conference on high T sub c thin films and single crystals, Ustron (Poland), 30 Sep - 4 Oct 1989
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
ELECTRON-PHONON COUPLING
COULOMB FIELD
SPECTROSCOPY
SUPERCONDUCTIVITY
TRANSITION TEMPERATURE
TUNNEL EFFECT
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
656100* - Condensed Matter Physics- Superconductivity