The band structure of alfa-(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.
@article{arxiv.cond-mat/0411676,
title = {Electronic band structure of alfa-(Per)2M(mnt)2 compounds},
author = {Enric Canadell and Manuel Almeida and James Brooks},
journal= {arXiv preprint arXiv:cond-mat/0411676},
year = {2009}
}
Comments
13 pages, including 4 figures. Accepted for publication in European Physical Journal B