Effect of pressure on magnetism of UIrGe

Pospisil, J.; Gochi, Jun*; Haga, Yoshinori   ; Honda, Fuminori*; Uwatoko, Yoshiya*; Tateiwa, Naoyuki   ; Kambe, Shinsaku  ; Nagasaki, Shoko*; Homma, Yoshiya*; Yamamoto, Etsuji  

The effect of hydrostatic pressure on the electronic state of the antiferromagnet UIrGe is reported. A series of resistivity measurements up to 15 GPa demonstrated the Neel temperature decreases with increasing pressure and vanishes around 12 GPa. The transition from antiferromagnetic to paramagnetic phase appears to be of first order. A moderate increase in the effective mass was detected in the vicinity of the critical pressure.