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Ultrasonic velocity and attenuation measurements at the metamagnetic transition in UPt3 |
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| Authors: | S. W. Lin I. Kouroudis A. G. M. Jansen P. Wyder B. Luthi D. G. Hinks J. B. Ketterson M. Levy Bimal K. Sarma |
| Affiliation: | (1) Department of Physics, Northwestern University, 60208 Evanston, IL, USA;(2) University of Frankfurt, Germany;(3) High Field Magnet Laboratory, Max Planck Institute, Grenoble, France;(4) Materials Science Division, Argonne National Laboratory, 60439 Argonne, IL, USA;(5) Department of Physics, University of Wisconsin-Milwaukee, 53201 Milwaukee, WI, USA |
| Abstract: | The longitudinal ultrasonic attenuation and velocity were measured on a single crystal of UPt3 in a high magnetic field of up to 23T. Earlier ultrasonic measurements had seen a softening of the lattice as evidenced by a huge drop in the velocity at a field of 20T. Both the attenuation and velocity have been measured in field sweeps. Accompanying the large dip in the velocity is a large attenuation peak at this metamagnetic transition. Measurements were also done at several frequencies. |
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