We present a detailed study of the Nernst effect Szx in (TMTSF)2PF6 as a function of temperature, magnetic field magnitude, direction, and pressure. As previously reported there is a large resonantlike structure as the magnetic field is rotated through crystallographic directions, the Lebed magic angles. These Nernst effect resonances strongly suggest that the transport of the system is effectively "coherent" only in crystallographic planes along or close to the applied field direction. We also present analytical and numerical calculations of the conductivity and thermoelectric tensors for (TMTSF)2PF6, based on a Boltzmann transport model within the semiclassical approximation. The Boltzmann transport calculation fails to describe the experimental data. We suggest that the answer may lie in the field induced decoupling of the strongly correlated chains.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Dec 15 2005|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics