부산대학교 도서관

The authors report measurements of the ultrasonic attenuation and sound velocity through the superconducting transition of UPt//3. The attenuation varies as T**2 at low temperatures and is inconsistent with the identification of UPt//3 as a singlet superconductor. Below T//c the sound velocity varies roughly as T**3 and above T//c as T**2. The results indicate that UPt//3 is an anisotropic (triplet) superconductor in a polar-like state.