Thermal expansion and magnetostriction of superconducting URu{sub 2}Si{sub 2}

Journal Article · Mon May 01 04:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.51.12665· OSTI ID:45545

van Dijk, N H; de Visser, A; Franse, J J.M.; Menovsky, A A ^[1]

---

1. Van der Waals-Zeeman Laboratory, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam (Netherlands)

Dilatation measurements have been performed on a single-crystalline sample of the heavy-fermion superconductor URu{sub 2}Si{sub 2} ({ital T}{sub {ital c}}=1.2 K). Thermal-expansion measurements in combination with specific-heat data reveal a thermal electronic Grueneisen parameter of {Gamma}{sub {ital T}}=27. A comparison with the magnetic electronic Grueneisen parameter derived from the magnetostriction, {Gamma}{sub {ital B}}=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.

• OSTI ID: 45545
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 18 Vol. 51; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CRITICAL FIELD
GRUENEISEN CONSTANT
HYSTERESIS
MAGNETOSTRICTION
RUTHENIUM SILICIDES
SPECIFIC HEAT
SUPERCONDUCTORS
THERMAL EXPANSION
URANIUM SILICIDES