Mapping the Fermi velocity in the quasi-2D organic conductor k-(BEDT-TTF)2I3

Details Mapping the Fermi velocity in the quasi-2D organic conductor k-(BEDT-TTF)2I3 Mapping the Fermi velocity in the quasi-2D organic conductor k-(BEDT-TTF)2I3

2003-06-04

arxiv.org/abs/cond-mat/0306104v1

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, including figures

Scientific paper

We demonstrate a new method for determining the Fermi velocity in quasi-two-dimensional (Q2D) organic conductors. Application of a magnetic field parallel to the conducting layers results in periodic open orbit quasiparticle trajectories along the Q2D Fermi surface. Averaging of this motion over the Fermi surface leads to a resonance in the interlayer microwave conductivity. The resonance frequency is simply related to the extremal value of the Fermi velocity perpendicular to the applied field. Thus, angle dependent microwave studies enable a complete mapping of the Fermi velocity. We illustrate the applicability of this method for the highly-2D organic conductor k-(BEDT-TTF)2I3.

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