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Title: Low-temperature phase diagram of YbBiPt

Abstract

Resistivity measurements are reported on the cubic heavy-fermion compound YbBiPt at ambient and hydrostatic pressures to [approx]19 kbar and in magnetic fields to 1 T. The phase transition at [ital T][sub [ital c]]=0.4 K is identified by a sharp rise in resistivity. That feature is used to build low-temperature [ital H]-[ital T] and [ital P]-[ital T] phase diagrams. The phase boundary in the [ital H]-[ital T] plane follows the weak-coupling BCS expression remarkably well from [ital T][sub [ital c]] to [ital T][sub [ital c]]/4, while small hydrostatic pressure of [approx]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 [ital T]=0.4 K. Outside of the SDW phase at low temperature, hydrostatic pressure increases the [ital T][sup 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.

Authors:
; ; ; ;  [1]
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
6909960
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics; (United States)
Additional Journal Information:
Journal Volume: 76:10; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BISMUTH COMPOUNDS; PHASE DIAGRAMS; PLATINUM COMPOUNDS; YTTERBIUM COMPOUNDS; ELECTRIC CONDUCTIVITY; HIGH PRESSURE; MAGNETIC FIELDS; MEDIUM PRESSURE; PRESSURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; VERY HIGH PRESSURE; DIAGRAMS; ELECTRICAL PROPERTIES; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; 360102* - Metals & Alloys- Structure & Phase Studies

Citation Formats

Movshovich, R, Lacerda, A, Canfield, P C, Thompson, J D, and Fisk, Z. Low-temperature phase diagram of YbBiPt. United States: N. p., 1994. Web. doi:10.1063/1.358326.
Movshovich, R, Lacerda, A, Canfield, P C, Thompson, J D, & Fisk, Z. Low-temperature phase diagram of YbBiPt. United States. https://doi.org/10.1063/1.358326
Movshovich, R, Lacerda, A, Canfield, P C, Thompson, J D, and Fisk, Z. Tue . "Low-temperature phase diagram of YbBiPt". United States. https://doi.org/10.1063/1.358326.
@article{osti_6909960,
title = {Low-temperature phase diagram of YbBiPt},
author = {Movshovich, R and Lacerda, A and Canfield, P C and Thompson, J D and Fisk, Z},
abstractNote = {Resistivity measurements are reported on the cubic heavy-fermion compound YbBiPt at ambient and hydrostatic pressures to [approx]19 kbar and in magnetic fields to 1 T. The phase transition at [ital T][sub [ital c]]=0.4 K is identified by a sharp rise in resistivity. That feature is used to build low-temperature [ital H]-[ital T] and [ital P]-[ital T] phase diagrams. The phase boundary in the [ital H]-[ital T] plane follows the weak-coupling BCS expression remarkably well from [ital T][sub [ital c]] to [ital T][sub [ital c]]/4, while small hydrostatic pressure of [approx]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 [ital T]=0.4 K. Outside of the SDW phase at low temperature, hydrostatic pressure increases the [ital T][sup 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.},
doi = {10.1063/1.358326},
url = {https://www.osti.gov/biblio/6909960}, journal = {Journal of Applied Physics; (United States)},
issn = {0021-8979},
number = ,
volume = 76:10,
place = {United States},
year = {1994},
month = {11}
}