Thermal expansion and magnetostriction of superconducting URu2Si2

N. H. Van Dijk, A. De Visser, J. J.M. Franse, A. A. Menovsky

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)12665-12672
Number of pages8
JournalPhysical Review B
Volume51
Issue number18
DOIs
Publication statusPublished - 1995
Externally publishedYes

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