Competing Ordered Phases in URu2Si2: Hydrostatic Pressure and Rhenium Substitution

J. R. Jeffries, N. P. Butch, B. T. Yukich, and M. B. Maple
Phys. Rev. Lett. 99, 217207 – Published 20 November 2007

Abstract

A persistent kink in the pressure dependence of the “hidden order” (HO) transition temperature of URu2xRexSi2 is observed at a critical pressure Pc=15kbar for 0x0.08. In URu2Si2, the kink at Pc is accompanied by the destruction of superconductivity, a change in the magnitude of a spin excitation gap, determined from electrical resistivity measurements; and a complete gapping of a portion of the Fermi surface (FS), inferred from a change in scattering and the competition between the HO state and superconductivity for FS fraction.

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  • Received 17 July 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.217207

©2007 American Physical Society

Authors & Affiliations

J. R. Jeffries*, N. P. Butch, B. T. Yukich, and M. B. Maple

  • Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093, USA

  • *Permanent address: Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.

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Vol. 99, Iss. 21 — 23 November 2007

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