Magic Angle Effects and AMRO as Dimensional Crossovers
Superconductivity
2007-05-23 v1 Strongly Correlated Electrons
Abstract
It is shown that interference effects between velocity and density of states, which occur as electrons move along open orbits in the extended Brillouin zone, result in a change of wave functions dimensionality at Magic Angle (MA) directions of a magnetic field. In a particular, we demonstrate that these 1D -> 2D dimensional crossovers result in the appearance of sharp minima in a resistivity component Rzz, perpendicular to conducting layers, which explains the main qualitative features of MA and Angular Magneto-Resistance Oscillations (AMRO) phenomena observed in low-dimensional conductors (TMTSF)2X, (DMET-TSeF)2X, and a-(BEDT-TTF)2MHg(SCN)4.
Cite
@article{arxiv.cond-mat/0404042,
title = {Magic Angle Effects and AMRO as Dimensional Crossovers},
author = {A. G. Lebed and N. N. Bagmet and M. J. Naughton},
journal= {arXiv preprint arXiv:cond-mat/0404042},
year = {2007}
}
Comments
Submitted to PRL: 8 pages, 1 figure