https://doi.org/10.1007/s100510170036
High-pressure study of the non-Fermi liquid material U2Pt2|n
1
Van der Waals-Zeeman Institute, University of Amsterdam,
Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands
2
National Research Institute for Metals, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
3
Department of Chemistry, Technological and Nuclear Institute,
Apartado 21, 2686-953 Sacavém, Portugal
Corresponding author: a devisser@science.uva.nl
Received:
2
March
2001
Revised:
29
June
2001
Published online: 15 October 2001
The effect of hydrostatic pressure (
GPa) on the non-Fermi liquid state of U2Pt2In is investigated by electrical resistivity measurements in the temperature interval 0.3-300 K. The experiments were carried out on single-crystals with the current along 
and perpendicular 
to the tetragonal axis. The pressure effect is strongly current-direction dependent. For 
we observe a rapid recovery of the Fermi-liquid T2-term with pressure. A comparison of the data with the magnetotransport theory of Rosch provides evidence for the location of U2Pt2In at an antiferromagnetic quantum critical point. For 
the resistivity increases under pressure, indicating the enhancement of an additional scattering mechanism.
PACS: 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems / 71.27.+a – Strongly correlated electron systems; heavy fermions / 72.15.-v – Electronic conduction in metals and alloys
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001
