Low Temperature Physics: 43, 27 (2017); https://doi.org/10.1063/1.4974184
Физика Низких Температур: Том 43, Выпуск 1 (Январь 2017), c. 33-40    ( к оглавлению , назад )

Quantum oscillations in coupled orbits networks of (BEDT-TTF) salts with tris(oxalato)metallate anions

Vladimir N. Laukhin1,2, Alain Audouard3, Jean-Yves Fortin4, David Vignolles3, Tatyana G. Prokhorova5, Eduard B. Yagubskii5, and Enric Canadell2

1Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluis Companys 23, Barcelona 08010, Spain

2Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigationes Científicas, Campus Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
E-mail: vladimir@icmab.es

3Laboratoire National des Champs Magnétiques Intenses (UPR 3228 CNRS, INSA, UGA, UPS) 143 avenue de Rangueil, F-31400 Toulouse, France

4Institut Jean Lamour, Département de Physique de la Matière et des Matériaux, CNRS-UMR 7198, Vandoeuvre-les-Nancy, F-54506, France

5Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, MD, Russia

Received June 29, 2016


Band structure calculations relevant to bis-ethylenedithio-tetrathiafulvalene-based charge transfer salts containing tris(oxalato)metallate anions, with generic formula (BEDT-TTF)4A[M(C2O4)3]·Solv, where A is a mo-novalent anion, M is a trivalent cation and Solv is a solvent, suggest that their Fermi surface is liable to achieve networks of compensated orbits coupled by magnetic breakdown. Even though this picture accounts for quantum oscillations spectra of a number of these compounds, puzzling results can be noticed in several cases, pointing to the possibility of Fermi surface reconstruction at low temperature.

PACS: 71.18.+y Fermi surface: calculations and measurements; effective mass, g factor;
PACS: 71.20.Rv Polymers and organic compounds;
PACS: 72.15.Gd Galvanomagnetic and other magnetotransport effects.

Key words: Fermi surface, quantum oscillations, organic metals, high magnetic fields.

Published online: November 25, 2016