Presented results on galvano-magnetic measurements are motivated by unusual electronic structure of bismuth which may be strongly modified by the high magnetic field, where various types of magnetic field induced instabilities may occur.
Measurements of the thermoelectric response of Bi wires in quantizing magnetic field up to 35 T have revealed some anomalies in a magnetic field far above the quantum limit of the electrons: a sharp peak at 33 T and some oscillating instabilities in the magnetothermopower dependence in a magnetic field below 20 T. Observed correlation between a simultaneous shift in a magnetic field of the position of the anomalies and of the quantum limit of electrons, when modifying of the electronic structure under strain, allows us to attribute of unidentified peaks to the complex structure of the lowest Landau level of electrons when one of the lowest spin-polarized Landau sublevel of heavy electrons approaches and crosses the Fermi energy level.