Fermi-surface topology of {kappa}-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br at ambient pressure
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405 (United States)
Ambient pressure Fermi-surface measurements are reported for {kappa}-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br. The single Shubnikov{endash}de Haas frequency that is detected (3798{plus_minus}5 T) corresponds to 100{percent} of the Brillouin zone and can be attributed to the {beta} orbit that results from magnetic breakdown. From the temperature dependence of the oscillations, it appears that {kappa}-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br possesses a conventional Fermi-liquid ground state, although with a short mean free path, possibly due to the presence of Cu(II) ions. The effective mass as determined from the {beta}-orbit oscillations is m{sup {asterisk}}=5.4{plus_minus}0.1m{sub e}. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 550397
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 8 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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