Single crystal growth of the plutonium-based superconductor PuRhGa and anistropic superconducting properties

Haga, Yoshinori   ; Sakai, Hironori   ; Matsuda, Tatsuma; Tokunaga, Yo  ; Fujimoto, Tatsuya; Kambe, Shinsaku  ; Yamamoto, Etsuji  ; Nakamura, Akio; Walstedt, R. E.; Yasuoka, Hiroshi; Nakajima, Kunihisa  ; Arai, Yasuo; Aoki, Dai*; Homma, Yoshiya*; Shiokawa, Yoshinobu; Onuki, Yoshichika

Single crystals of the plutonium-based superconductor PuRhGa have been successufully grown. The anisotropic superconducting properties were investigated by magnetization and Ga-NQR measurements. Large anisotropy of the upper critical field and the presence of line nodes on the Fermi surface were revealed, indicating the quasi-two-dimensional electronic state as well as the magnetically mediated superconductivity.