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Titolo:
QUASI-2-DIMENSIONAL SPIN-SPLIT FERMI-LIQUID BEHAVIOR OF KAPPA-(BEDT-TTF)(2)I-3 IN STRONG MAGNETIC-FIELDS
Autore:
HARRISON N; MIELKE CH; RICKEL DG; WOSNITZA J; QUALLS JS; BROOKS JS; BALTHES E; SCHWEITZER D; HEINEN I; STRUNZ W;
Indirizzi:
LOS ALAMOS NATL LAB,HIGH FIELD MAGNET LAB,POB 1663 LOS ALAMOS NM 87545 LOS ALAMOS NATL LAB,HIGH FIELD MAGNET LAB LOS ALAMOS NM 87545 UNIV KARLSRUHE,INST PHYS D-76128 KARLSRUHE GERMANY FLORIDA STATE UNIV,NATL HIGH MAGNET FIELD LAB TALLAHASSEE FL 32306 UNIV STUTTGART,INST PHYS 3 D-70550 STUTTGART GERMANY UNIV HEIDELBERG,INST ANORGAN CHEM D-69120 HEIDELBERG GERMANY
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 16, volume: 58, anno: 1998,
pagine: 10248 - 10255
SICI:
0163-1829(1998)58:16<10248:QSFBOK>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
HAAS-VAN-ALPHEN; ORGANIC SUPERCONDUCTOR KAPPA-(BEDT-TTF)(2)I-3; QUANTUM HALL REGIME; OSCILLATIONS; BREAKDOWN; ALPHA-(BEDT-TTF)(2)TLHG(SCN)(4); INTERFERENCE; CONDUCTORS; METAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
N. Harrison et al., "QUASI-2-DIMENSIONAL SPIN-SPLIT FERMI-LIQUID BEHAVIOR OF KAPPA-(BEDT-TTF)(2)I-3 IN STRONG MAGNETIC-FIELDS", Physical review. B, Condensed matter, 58(16), 1998, pp. 10248-10255

Abstract

Measurements of both the magnetization and magnetotransport of kappa-(BEDT-TTF)(2)I-3 (BEDT-TTF is bisethylenedithio-tetrathiafulvalene) inmagnetic fields extending to 60 T at 0.4 K and 20 T at 35 mK are reported. Strong eddy currents observed in the magnetization are found to exhibit critical currentlike behavior. This might be connected with the breakdown of the quantum Hall effect, as proposed previously for alpha-phase salts. The strong two dimensionality leads to an apparent fall of the effective mass together with an overall suppression of the amplitude of the magnetic quantum oscillations at high magnetic fields or very low temperatures. These effects are more pronounced for the Shubnikov-de Haas (SdH) effect but clearly visible also for the de Haas-van Alphen (dHvA) oscillations. The apparent fall of the effective massand the deviations of the dHvA signal from the behavior predicted by the standard Lifshitz-Kosevich theory can quantitatively be explained by the influence of chemical-potential oscillations on the wave form in a two-dimensional, spin-split Fermi liquid. The much stronger deviations from the conventional behavior in the transport data hint to an additional mechanism unique to the SdH effect. [S0163-1829(98)01940-7].

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Documento generato il 27/09/20 alle ore 22:51:08