Eur. Phys. J. B 42, 453-456 (2004)
https://doi.org/10.1140/epjb/e2005-00001-3

Electronic band structure of α-(Per)₂M(mnt)₂ compounds

¹ Institut de Ciència de Materials de Barcelona, (CSIC), Campus Universitari de Bellaterra, 08193 Bellaterra, Spain
² Instituto Tecnológico e Nuclear / CFMCUL, Estrada Nacional n 10, P-2686-953 Sacavém, Portugal
³ NHMFL/Physics, Florida State University, Tallahassee Florida, 32310, USA

Corresponding author: ^a malmeida@itn.pt

Received: 16 August 2004
Revised: 15 November 2004
Published online: 18 January 2005

Abstract

The band structure of α-(Per)₂M(mnt)₂, leads to a description of these materials as nearly perfectly one dimensional conductors. The conduction is mainly along the stacking direction of the partially oxidized perylene molecules, (Per)^1/2+, with virtually no interchain bandwidth. However, recent high magnetic field experiments suggest orbital coupling of the magnetic field to the electronic structure, indicating a finite interchain bandwidth. The details of the band structure and the possible variances, at low energies, from a perfect one dimensional system are examined. In particular, multiple quasi-one dimensional Fermi surface sheets, which would become important at low temperatures, may lead to an explanation for the experimental finding of a magnetic field induced high field charge density wave ground state. Experimental tests to observe the effects of the finite interchain bandwidth are proposed.