Magnetic breakdown in the organic conductor {alpha}-(BEDT-TTF){sub 2}KHg(SCN){sub 4} in magnetic fields of up to 60 T

Journal Article · Tue Sep 01 04:00:00 EDT 1998 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.58.7560· OSTI ID:658494

Honold, M M ^[1]; Harrison, N ^[2]; Nam, M; Singleton, J ^[1]; Mielke, C H ^[2]; Kurmoo, M; Day, P ^[3]

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1. Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom)
2. National High Magnetic Field Laboratory, LANL, MS-E536, Los Alamos, New Mexico 87545 (United States)
3. The Royal Institution, 21 Albemarle Street, London W1X 4BS (United Kingdom)

de Haas{endash}van Alphen experiments on {alpha}-(BEDT-TTF){sub 2}KHg(SCN){sub 4} in fields of up to 60 T reveal oscillations of the {beta} frequency, a clear indication of magnetic breakdown at fields well above the kink transition. A study of the amplitude of the oscillations shows that the gap between the quasi-one-dimensional and quasi-two-dimensional Fermi-surface sheets is significantly smaller than predicted by band-structure calculations. We consider the implications for the spin-density-wave nesting and the quantum Hall effect. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 658494
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 12 Vol. 58; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BEDT-TTF
DE HAAS-VAN ALPHEN EFFECT
ELECTRONIC STRUCTURE
ENERGY GAP
FERMI LEVEL
MAGNETIC FIELDS
MAGNETORESISTANCE
ORGANIC COMPOUNDS
OSCILLATIONS