Thermal expansion and magnetostriction of superconducting URu2Si2
N. H. van Dijk, A. de Visser, J. J. M. Franse, A. A. Menovsky
DOI 10.1103/PhysRevB.51.12665 · Physical Review B
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Abstract
Dilatation measurements have been performed on a single-crystalline sample of the heavy-fermion superconductor URu2Si2 (Tc=1.2 K). Thermal-expansion measurements in combination with specific-heat data reveal a thermal electronic Grüneisen parameter of ΓT=27. A comparison with the magnetic electronic Grüneisen parameter derived from the magnetostriction, ΓB=26, points to a single energy scale. The measured magnetostriction is strongly anisotropic with a peculiar hysteresis. Close to the upper critical field, a change of sign in the magnetostrictive hysteresis is observed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| URu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.2 | Pressure not reported | unknown |
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