Competing Ordered Phases in URu2Si2: Hydrostatic Pressure and Re-substitution

Abstract

A persistent kink in the pressure dependence of the \hidden order" (HO) transition temperature of URu2-xRexSi2 is observed at a critical pressure Pc=15 kbar for 0 < x < 0.08. 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.

References in corpus (3)

• Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu${}_2$Si${}_2$
• Interplay between SDW and induced local moments in URu2Si2
• Pressure dependence of the magnetization of URu2Si2

Cited by in corpus (5)

• Possible Phase Transition Deep Inside the Hidden Order Phase of Ultraclean URu2Si2
• Coexistence of superconductivity and charge-density waves in a two-dimensional Holstein model at half-filling
• Hydrostaticity and hidden order: effects of experimental conditions on the temperature-pressure phase diagram of URu2Si2
• Magneto-thermal evidence of a partial gap at the Fermi surface of UPt_2Si_2
• Uncovering the hidden order in URu2Si2: Identification of Fermi surface instability and gapping