Resistivity, Hall effect, and magnetic susceptibility ofUPd2Si2

Abstract

The electrical resistivity, Hall effect, and magnetic susceptibility of single-crystal UPd2Si2 have been studied between 4.2 and 300 K. A large anisotropy was observed in both the magnetic and transportproperties. There is a quadratic temperature dependence of the resistivity for a range of temperatures between 4.2 and 80 K. At higher temperatures, the resistivity indicates a Kondo-type behavior. The behavior of these quantities is accounted for by the magnetic phase transitions at 108 and 136 K reported from neutron-scattering studies. At high temperatures, the magnetic susceptibility of UPd, Si~is Curie-Wiess-like along the c axis. The temperature dependence of the Hall coefficient above 108 K is accounted for by a theoretical model invoking skew scattering of conduction electrons by localized magnetic moments.

Pressure-temperature phase diagram ofUPd2Si2andQuirion1, Razavi2, Plumer3 et al. 1998Phys. Rev. BSelf Cite17330View full textAdd to dashboardCite

“…Figure 1 shows the temperature dependence of the resistivity UPd 2 Si 2 measured at different pressures. At 1 bar, the overall temperature dependence displays the same behavior as obtained previously by other groups 10,11 for Ќ . We clearly observe two distinct breaks that coincide with the expected phase transitions for UPd 2 Si 2 at ambient pressure, one at 108 K and the other at 136 K. The magnetic neutron scattering measurement 5 indicates that the magnetic moments, which are localized on the uranium atoms, form an antiferromagnetic (͗1͘) structure at low temperatures.…”

Giant topological and planar Hall effect in Cr$_{1/3}$NbS$_{2}$

“…The temperature dependence of the longitudinal resistivity differs from a conventional metallic ferromagnet [33]. ρ xx initially increases with decreasing temperature until ∼ 150 K. A similar increase in ρ xx is observed in UPd 2 Si 2 and was attributed to the Kondo effect [34]. Below 150 K the resistivity of Cr 1/3 NbS 2 then falls over a wide temperature interval, ∆T = 100 K, centered around T c .…”

Specific heat of the ternary compoundsUPd2Si2andStartseva1, Razavi2, Salamati3 et al. 1998Phys. Rev. BSelf Cite6030View full textAdd to dashboardCite

“…2,4 The magnetic phase transition at 108 K is a simple body-centered tetragonal antiferromagnet with an order moment of (2.3Ϯ0.3) B . The phase transition at 136 K is the onset of an antiferromagnetically ordered state with an incommensurate spin density wave and with the same magnitude of magnetic moment as above.…”

“…This assumption is based on elastic neutron scattering data 2 and magnetic susceptibility and resistivity measurements. 4 To complete the picture of the properties of UPd 2 Si 2 , specific heat data were needed. Specific heat data at low temperatures ͑1-4 K͒ open up possibilities for directly studying the mass enhancement factor ␥, the value of which characterizes whether or not this particular system belongs to the heavy-fermion ͑HF͒ family.…”