We extend an earlier analysis of the electric conductivity of field-induced spin-density waves by including the higher-order terms in tb/ta where ta and tb are the electron-transfer integrals along the a and b axes, respectively. In the normal state the resulting conductivity tensor reproduces the result by Cooper et al. In the spin-density-wave states we predict an electric-field-dependent xx, but little electric field dependence for xy and yy associated with the Fröhlich conduction. We do not find the quantized Hall term within the single-gap approximation, although xy varies almost stepwise with the external magnetic field at low temperatures. The results are compared with some of the experiments on Bechgaard salts.
ASJC Scopus subject areas
- Condensed Matter Physics