Direct Observation of the Magnetic-Breakdown Induced Quantum Interference in the Quasi-Two-Dimensional Organic Metal {kappa}-{bold (} BEDT{bold -TTF{bold )}}{sub {bold 2}}Cu{bold (}NCS{bold )}{sub {bold 2}}
- Institute of Solid State Physics, Russian Academy of Science, Chernogolovka, MD, 142432 (Russia)
Magneto-oscillatory behavior of the organic metal {kappa}-(BEDT-TTF){sub 2}Cu(NCS){sub 2} has been studied at temperatures above 2K at which the thermodynamic quantum oscillations are highly suppressed due to the temperature smearing of the Fermi level. Under this condition, we directly observe kinetic oscillations with {ital F}{sub {beta}}{minus}2{ital F}{sub {alpha}} frequency coming from quantum interference of the electron orbits in the magnetic-breakdown regime. The extremely low effective mass of these oscillations causes a very weak temperature dependence of their amplitude, allowing up to {ital T}{approx_equal}9 K, the highest temperature reported for the observation of magnetic quantum oscillations in organic metals. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383894
- Journal Information:
- Physical Review Letters, Vol. 77, Issue 12; Other Information: PBD: Sep 1996
- Country of Publication:
- United States
- Language:
- English
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