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Titolo:
Investigations of the Fermi surface of a new organic metal: (BEDT-TTF)(4)[Ni(dto)(2)]
Autore:
Schiller, M; Schmidt, W; Balthes, E; Schweitzer, D; Koo, HJ; Whangbo, MH; Heinen, I; Klausa, T; Kircher, P; Strunz, W;
Indirizzi:
Univ Stuttgart, Inst Phys 3, D-70550 Stuttgart, Germany Univ Stuttgart Stuttgart Germany D-70550 s 3, D-70550 Stuttgart, Germany Max Planck Inst Festkorperforsch, High Field Magnet Lab, F-38042 Grenoble 9, France Max Planck Inst Festkorperforsch Grenoble France 9 42 Grenoble 9, France CNRS, F-38042 Grenoble 9, France CNRS Grenoble France 9CNRS, F-38042 Grenoble 9, France N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA N Carolina State Univ Raleigh NC USA 27695 pt Chem, Raleigh, NC 27695 USA Univ Heidelberg, Inst Anorgan Chem, D-69120 Heidelberg, Germany Univ Heidelberg Heidelberg Germany D-69120 , D-69120 Heidelberg, Germany
Titolo Testata:
EUROPHYSICS LETTERS
fascicolo: 1, volume: 51, anno: 2000,
pagine: 82 - 88
SICI:
0295-5075(200007)51:1<82:IOTFSO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRONIC-STRUCTURES; KAPPA-(BEDT-TTF)(2)I-3; CRYSTAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Schiller, M Univ Stuttgart, Inst Phys 3, Pfaffenwaldring 57, D-70550 Stuttgart, Germany Univ Stuttgart Pfaffenwaldring 57 Stuttgart Germany D-70550 y
Citazione:
M. Schiller et al., "Investigations of the Fermi surface of a new organic metal: (BEDT-TTF)(4)[Ni(dto)(2)]", EUROPH LETT, 51(1), 2000, pp. 82-88

Abstract

The Fermi surface (FS) of the new organic metal (BEDT-TTF)(4)[Ni(dto)(2)] has been investigated by de Haas-van Alphen (dHvA) and Shubnikov-de Haas (SdH) experiments. In both quantum oscillations with two different frequencies F-alpha = 634 T and F-beta = 4245 T are observed. These results confirm the calculated FS, which consists of one-dimensional and two-dimensional parts separated by a small energy gap. It is shown that the temperature and field dependence of the oscillation amplitudes can be well described by standard Lifshitz-Kosevich theory considering the magnetic breakdown by the so-called coupled network model. Beatings of the oscillation amplitudes are observed by held-dependent dHvA and SdH experiments. They can be explained by a slightly warped FS showing that this material represents a quasi-two-dimensional electronic system. The observed beating nodes in the dHvA and SdH signals appear at different magnetic fields. This fact is discussed in termsof additional scattering mechanisms.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 16:04:37