High magnetic field magnetoresistance anomalies in the charge density wave state of the quasi-two dimensional bronze KMo₆O₁₇

We report high magnetic field magnetoresistance measurements performed in pulsed fields up to 55T on the quasi-two dimensional charge density wave conductor KMo6O17. Magnetoresistance curves show several anomalies below 28T. First order transitions to smaller gap states take place at low temperature above 30T. A phase diagram T(B) has been obtained. The angular dependence of the anomalies is reported.