Two-dimensional angular-correlation-of-annihilation-radiation study of [kappa]-(BEDT-TTF)[sub 2]Cu(NCS)[sub 2]

Journal Article · Sat Oct 01 00:00:00 EDT 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.10393· OSTI ID:6931474

Chan, L P; Lynn, K G ^[1]; Harshman, D R; Haddon, R C ^[2]

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1. Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)

We report the two-dimensional angular-correlation-of-annihilation-radiation measurement of the [ital e][sup +][ital e][sup [minus]] (pair) momentum distribution in the organic superconductor [kappa]-(BEDT-TTF)[sub 2]Cu(NCS)[sub 2]. Our data, when compared with tight-binding (Hueckel) electronic-band calculations, show features consistent with predicted Fermi surfaces. The structure around [ital Z] in our spectrum supports the results from earlier de Haas--van Alphen and Shubnikov--de Haas measurements. In addition, our data show features consistent with the predicted open Fermi surface that runs nearly parallel to [ital YM].

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6931474
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:14; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360607* -- Other Materials-- Superconducting Properties-- (1992-)
ANGULAR CORRELATION
COLLISIONS
CORRELATIONS
DE HAAS-VAN ALPHEN EFFECT
ELECTRON COLLISIONS
ELECTRON-POSITRON COLLISIONS
ELECTRONIC STRUCTURE
ENERGY LEVELS
FERMI LEVEL
ORGANIC SUPERCONDUCTORS
POSITRON COLLISIONS
SHUBNIKOV-DE HAAS EFFECT
SUPERCONDUCTORS