ANOMALOUS BEHAVIOR OF THE ELECTRICAL-CONDUCTIVITY TENSOR IN STRONG MAGNETIC-FIELDS

The behavior of the electrical conductivity tensor in strong magnetic fields in the presence of unclosed quasiclassical electron trajectorie s of complex form near the Fermi surface is considered. It is shown th at the asymptotic behavior of the conductivity tensor in the limit B-- >infinity differs in this case from the picture previously described f or trajectories of simpler form. The possibility of blocking the longi tudinal conductivity in strong magnetic fields at low temperatures in the case of a Fermi surface of special form is also treated theoretica lly. (C) 1997 American Institute of Physics.