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Low‐temperature phase diagram of YbBiPt
Journal of Applied Physics (1994)
  • R. Movshovich, Los Alamos National Laboratory
  • A. Lacerda, Los Alamos National Laboratory
  • Paul C. Canfield, Los Alamos National Laboratory
  • J. D. Thompson, Los Alamos National Laboratory
  • Z. Fisk, Los Alamos National Laboratory

Resistivity measurements are reported on the cubic heavy‐fermion compound YbBiPt at ambient and hydrostatic pressures to ≊19 kbar and in magnetic fields to 1 T. The phase transition at T c =0.4 K is identified by a sharp rise in resistivity. That feature is used to build low‐temperature H‐T and P‐Tphase diagrams. The phase boundary in the H‐T plane follows the weak‐coupling BCS expression remarkably well from T c to T c /4, while small hydrostatic pressure of ≊1 kbar suppresses the low‐temperature phase entirely. These effects of hydrostatic pressure and magnetic field on the phase transition are consistent with an spin‐density‐wave (SDW) formation in a very heavy electron band at T=0.4 K. Outside of the SDW phase at low temperature, hydrostatic pressure increases the T 2 coefficient of resistivity, signaling an increase in heavy‐fermion correlations with hydrostatic pressure. The residual resistivity decreases with pressure, contrary to trends in other Yb heavy‐fermion compounds.

  • Hydrostatics,
  • Electrical resistivity,
  • Magnetic fields,
  • Magnetic phase transitions,
  • Phase diagrams
Publication Date
November 15, 1994
Publisher Statement
The following article appeared in Journal of Applied Physics 76 (1994): 6121 and may be found at Copyright 1994 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Citation Information
R. Movshovich, A. Lacerda, Paul C. Canfield, J. D. Thompson, et al.. "Low‐temperature phase diagram of YbBiPt" Journal of Applied Physics Vol. 76 Iss. 10 (1994)
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