Elastic properties of the heavy fermion superconductor URu[sub 2]Si[sub 2]

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Journal of Low Temperature Physics; (United States)

DOI:https://doi.org/10.1007/BF00754672· OSTI ID:5091407

Wolf, B; Sixl, W; Graf, R; Finsterbusch, D; Bruls, G; Luethi, B ^[1]; Knetsch, E A; Menovsky, A A; Mydosh, J A ^[2]

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1. Universitaet Frankfurt (Germany)
2. Laboratorium-Rijks-Universiteit Leiden (Netherlands)

Measurements of the elastic constants in the normal and superconducting state on a high quality URu[sub 2]Si[sub 2] single crystal exhibit large anomalies in the c[sub 11] mode versus temperature around 30 K and T[sub c]. No such anomalies are visible in the c[sub 33] mode and in the shear elastic constants. The authors describe this behavior with the anisotropic Grueneisen parameter coupling. Using the c[sub 11] anomaly a B-T phase diagram is determined which clearly shows the single phase bulk properties of superconducting URu[sub 2]Si[sub 2]. The magnetic field dependences of the shear waves in the superconducting and normal state can be interpreted quantitatively with a Lorentz force mechanism.

• OSTI ID: 5091407
• Journal Information: Journal of Low Temperature Physics; (United States), Journal Name: Journal of Low Temperature Physics; (United States) Vol. 94:3-4; ISSN JLTPAC; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ACTINIDE COMPOUNDS
CRYSTALS
ELASTICITY
MECHANICAL PROPERTIES
MONOCRYSTALS
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM SILICIDES
SILICIDES
SILICON COMPOUNDS
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
URANIUM SILICIDES