Organic conductors in high magnetic fields: Model systems for quantum oscillation physics

Alain Audouard; Jean-Yves Fortin

doi:10.1016/j.crhy.2012.07.001

Organic conductors in high magnetic fields: Model systems for quantum oscillation physics
[Les conducteurs organiques sous champs magnétiques intenses : Systèmes modèles pour la physique des oscillations quantiques]

Alain Audouard ¹ ; Jean-Yves Fortin ²

¹ Laboratoire national des champs magnétiques intenses (UPR 3228 CNRS, INSA, UJF, UPS), 143, avenue de Rangueil, 31400 Toulouse, France
² Institut Jean-Lamour, groupe de physique statistique, CNRS–UMR 7198–Nancy-Université, BP 70239, 54506 Vandoeuvre-les-Nancy cedex, France

Comptes Rendus. Physique, Physics in High Magnetic Fields / Physique en champ magnétique intense, Volume 14 (2013) no. 1, pp. 15-26.

Résumé
Abstract

Bien que les conducteurs organiques présentent des structures cristallines complexes et de basse symétrie, les calculs prédisent une structure électronique multibande quasi-bi dimensionnelle conduisant généralement à une surface de Fermi très simple. Bien que quelques résultats expérimentaux déroutants soient observés, les données de nombreux composés sont en accord avec les calculs, ce qui fait de ces derniers des systèmes modèles pour la physique des oscillations quantiques dans les réseaux dʼorbites couplées par la rupture magnétique. Lʼétat de lʼart de cette problématique est passée en revue.

Even although organic conductors have complicated crystalline structures with low symmetry and large unit cells, band structure calculations predict a multiband quasi-two-dimensional electronic structure yielding a very simple Fermi surface in most cases. Although few puzzling experimental results have been observed, data for numerous compounds are in agreement with calculations, which make them suitable systems for studying magnetic quantum oscillations in networks of orbits connected by magnetic breakdown. The state of the art of these problematics is reviewed.

Publié le : 2012-09-21

DOI : 10.1016/j.crhy.2012.07.001

Keywords: Organic metals, Quantum oscillations, Fermi surface
Mots-clés : Métaux organiques, Oscillations quantiques, Surface de Fermi

Affiliations des auteurs :

Alain Audouard ¹ ; Jean-Yves Fortin ²

¹ Laboratoire national des champs magnétiques intenses (UPR 3228 CNRS, INSA, UJF, UPS), 143, avenue de Rangueil, 31400 Toulouse, France
² Institut Jean-Lamour, groupe de physique statistique, CNRS–UMR 7198–Nancy-Université, BP 70239, 54506 Vandoeuvre-les-Nancy cedex, France

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Alain Audouard; Jean-Yves Fortin. Organic conductors in high magnetic fields: Model systems for quantum oscillation physics. Comptes Rendus. Physique, Physics in High Magnetic Fields / Physique en champ magnétique intense, Volume 14 (2013) no. 1, pp. 15-26. doi : 10.1016/j.crhy.2012.07.001. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2012.07.001/

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