Compound formation and superconductivity in Au-Si: X-ray absorption measurements on ion-beam-mixed Au-Si films

Journal Article · Wed Mar 15 00:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.5748· OSTI ID:6318630

Jeon, Y; Jisrawi, N; Liang, G; Lu, F; Croft, M; McLean, W L; Hart, D L; Stoffel, N G; Sun, J Z; Geballe, T H; others, and

Multilayered Au-Si thin films have been deposited with the net compositions ''Au/sub 1-//sub x/Si/sub x/,'' x = 0.29, 0.5, and 0.8. After ion-beam mixing these films exhibited superconductivity in the 0.3--1.2 K range despite the nonsuperconducting character of both Au and Si. Near-edge x-ray absorption spectroscopy (XAS) measurements on the Au L/sub 3/ edge in these films indicate that metastable Au-Si compound formation occurs in these ion-mixed materials. Specifically, the XAS measurements indicate changes in Au 5d-orbital occupancy and changes in the local Au structural environment which are both consistent with local compound formation.

• Research Organization: Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08855-0849
• OSTI ID: 6318630
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 39:9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
GOLD ALLOYS
SUPERCONDUCTIVITY
SILICON ALLOYS
BINARY ALLOY SYSTEMS
ION BEAMS
MIXING
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SYNTHESIS
THIN FILMS
X-RAY SPECTROSCOPY
ALLOY SYSTEMS
ALLOYS
BEAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FILMS
SPECTROSCOPY
360104* - Metals & Alloys- Physical Properties
656100 - Condensed Matter Physics- Superconductivity