Eur. Phys. J. B 55, 383-388 (2007)
https://doi.org/10.1140/epjb/e2007-00066-x

Frequency combinations in the magnetoresistance oscillations spectrum of a linear chain of coupled orbits with a high scattering rate

¹ Laboratoire National des Champs Magnétiques Pulsés (UMR 5147: Unité Mixte de Recherche CNRS - Université Paul Sabatier - INSA de Toulouse.), 143 avenue de Rangueil, 31400 Toulouse, France
² Institució Catalana de Recerca i Estudis Avançats (ICREA), 08210 Barcelona, Spain
³ Institut de Ciència de Materials de Barcelona, CSIC, Campus de la UAB, 08193, Bellaterra, Spain
⁴ Institute of Problems of Chemical Physics, RAS, 142432 Chernogolovka, MD, Russia

Corresponding author: ^a audouard@lncmp.org

Received: 31 October 2006
Revised: 17 January 2007
Published online: 9 March 2007

Abstract

The oscillatory magnetoresistance spectrum of the organic metal (BEDO)₅Ni(CN)₄. 3C₂H₄(OH)₂ has been studied up to 50 T, in the temperature range from 1.5 K to 4.2 K. In high magnetic field, its Fermi surface corresponds to a linear chain of quasi-two-dimensional orbits coupled by magnetic breakdown (MB). The scattering rate consistently deduced from the data relevant to the basic α and the MB-induced β orbits is very large which points to a significant reduction of the chemical potential oscillation. Despite of this feature, the oscillations spectrum exhibits many frequency combinations. Their effective masses and (or) Dingle temperature are not in agreement with either the predictions of the quantum interference model or the semiclassical model of Falicov and Stachowiak.