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Titolo: ANOMALOUS DAMPING EFFECTS OF MAGNETOQUANTUM OSCILLATIONS IN THE EXTREMELY 2D ELECTRONIC SYSTEM KAPPA(BEDTTTF)(2)I3
Autore: BALTHES E; PROUST C; AUDOUARD A; BROSSARD L; SCHWEITZER D; HEINEN I; KELLER HJ; STRUNZ W; JANSEN AGM; STEEP E;
 Indirizzi:
 UNIV STUTTGART,INST PHYS 3,PFAFFENWALDRING 57 D70550 STUTTGART GERMANY UNIV STUTTGART,INST PHYS 3 D70550 STUTTGART GERMANY INST NATL SCI APPL,PHYS MAT CONDENSEE LAB F31077 TOULOUSE FRANCE INST NATL SCI APPL,SERV NATL CHAMPS MAGNET PULSEES F31077 TOULOUSE FRANCE UNIV HEIDELBERG,INST ANORGAN CHEM D69120 HEIDELBERG GERMANY MAX PLANCK INST FESTKORPERFORSCH,HIGH FIELD MAGNET LAB F38042 GRENOBLE 9 FRANCE CNRS F38042 GRENOBLE 9 FRANCE
 Titolo Testata:
 Synthetic metals
fascicolo: 1,
volume: 94,
anno: 1998,
pagine: 3  9
 SICI:
 03796779(1998)94:1<3:ADEOMO>2.0.ZU;2C
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 ORGANIC SUPERCONDUCTOR KAPPA(BEDTTTF)(2)I3; FERMI SURFACES; MAGNETORESISTANCE; STATISTICS; GAS;
 Keywords:
 BIS(ETHYLENEDITHIOLO)TETRATHIAFULVALENE; MAGNETOQUANTUM OSCILLATIONS; DAMPING EFFECT;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Science Citation Index Expanded
 Science Citation Index Expanded
 Citazioni:
 32
 Recensione:
 Indirizzi per estratti:



 Citazione:
 E. Balthes et al., "ANOMALOUS DAMPING EFFECTS OF MAGNETOQUANTUM OSCILLATIONS IN THE EXTREMELY 2D ELECTRONIC SYSTEM KAPPA(BEDTTTF)(2)I3", Synthetic metals, 94(1), 1998, pp. 39
Abstract
The electronic system of the organic superconductor kappa(BEDTTTF)(2)I3 (BEDTTTF = bis(ethylenedithiolo) tetrathiafulvalene) is identified as extremely twodimensional (2D). The topology of the Fermi surface (FS) was investigated by means of Shubnikovde Haas (SdH) as well as de Haasvan Alphen (dHvA) experiments focusing on the verification of the 2D character of the system. This twodimensionality specially takes effect as soon as the magnetic field is oriented exactly perpendicular to the conducting planes (i.e. Theta=0 degrees). Under such conditions strong anomalous damping effects in the field and temperature dependence of quantum oscillation amplitudes are observed. These anomalous damping effects are discussed in terms of the occurrence of quasiparticle excitations with fractional statistics (QPFS) which may only occur in extremely 2D systems at high magnetic fields and low temperatures (i.e., only when (h) over bar omega(c) much greater than k(B)T). Taking up these requirements, the aim of this work is to quanti fy the extreme twodimensionality of the electronic system of kappa(BEDTTTF)(2)I3 and to show that the observed damping effects in fact are determined by the ratio (h) over bar omega(c)/k(B)T. These facts may support the interpretation of the observed damping effects of quantum oscillation amplitudes at high magnetic fields, low temperatures and Theta=0 degrees as generated by the possible occurrence of such QPFS. (C) 1998 Elsevier Science S.A. All rights reserved.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 06:46:12