Ultrasonic studies of the heavy fermion compounds |
| |
| Authors: | S. W. Lin S. Adenwalla J. B. Ketterson M. Levy Bimal K. Sarma |
| |
| Affiliation: | (1) Department of Physics, University of Wisconsin-Milwaukee, 53201 Milwaukee, WI, USA;(2) Department of Physics and Astronomy, Northwestern University, 60208 Evanston, IL, USA |
| |
| Abstract: | A review of ultrasonic measurements on the three heavy fermion compounds UPt
3
, URu
2
Si
2
and CeCu
6
is given. These compounds show one or more of the three types of co-operative behavior; Kondo-like effect, antiferromagnetism and superconductivity; all these features are observed as ultrasonic anomalies. Both UPt
3
and CeCu
6
show a strong coherence effect which is akin to a Kondo-like transition in the electronic system. Velocity anomalies are found at the antiferromagnetic transition for URu
2
Si
2
. UPt
3
also has an antiferromagnetic transition which is believed to influence the subsequent superconducting ordering. For UPt
3
, the superconductivity is of an unconventional nature; multiple superconducting phases have been observed and a complete phase diagram has been obtained from high resolution velocity measurements. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
