Skip to main content
eScholarship
Open Access Publications from the University of California

Specific heat of CeRhIn5: Pressure-driven transition from antiferromagnetism to heavy-fermion superconductivity

  • Author(s): Fisher, RA
  • Bouquet, F
  • Phillips, NE
  • Hundley, MF
  • Pagliuso, PG
  • Sarrao, JL
  • Fisk, Z
  • Thompson, JD
  • et al.
Abstract

CeRhIn5 is known to show an unusual transition at a critical pressure of ∼15 kbar. Specific-heat data show a gradual change in the zero-field "magnetic" specific-heat anomaly from one typical of antiferromagnetic ordering at ambient pressure to one more characteristic of a Kondo singlet ground state at 21 kbar. However, at 15 kbar there is a discontinuous change from an antiferromagnetic ground state to a superconducting ground state, and evidence of a weak thermodynamic first-order transition. Above the critical pressure, the low-energy excitations are characteristic of superconductivity with line nodes in the energy gap, and, at intermediate pressures, of extended gaplessness. © 2002 Plenum Publishing Corporation.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View