Magnetotransport studies of single crystalline URhSn*

Uranium compounds have been a great deal of interest for exclusively showing unusual phases, e. g. field boosted superconductivity, hidden order, multipolar order are some of the features which have been realized prevalently in uranium compounds. URhSn is one of such material which is yet to catch an interest for its enigmatic successive double phase transitions; remarkably the order parameter for the higher temperature transition occurring at T_O = 54 K is yet to known, while below T_C = 18 K a ferromagnetic ground state is confirmed. URhSn crystallizes in a non-centrosymmetric hexagonal unit cell of ZrNiAl-type with potentially frustrated quasi-kagome structure formed by the magnetic U-atoms.  We have grown high quality (RRR = 41) single crystal of URhSn by Czochralski method which furnishes quantum oscillations up to dHvA frequencies of 1.5 kT. High field magnetization shows field reinforcement of the order parameter at T_O. Electrical transport under pressure presents a unique type of P-T phase diagram composed of a pair of bicritical points and likely a quantum phase transition at 6.25 GPa accompanied by a Fermi surface reconstruction. In this meeting electrical transport in magnetic fields of the title compound will be highlighted.