High-pressure study of non-Fermi liquid and spin-glass-like behavior in CeRhSn

TL;DR

This study investigates how applying pressure affects the electrical resistivity of CeRhSn, revealing non-Fermi liquid behavior at high temperatures and spin-glass-like features at low temperatures, highlighting complex magnetic phenomena.

Contribution

It provides new insights into pressure-induced changes in electronic and magnetic behavior of CeRhSn, combining non-Fermi liquid and spin-glass-like phenomena in a single study.

Findings

Resistivity varies linearly with temperature at high temperatures under all pressures.

A low-temperature feature at Tf shows pressure dependence typical of spin glasses.

Similar behavior observed in CeRhSn and Ce0.9La0.1RhSn alloys.

Abstract

We present measurements of the temperature dependence of electrical resistivity of CeRhSn up to ~ 27 kbar. At low temperatures, the electrical resistivity varies linearly with temperature for all pressures, indicating non-Fermi liquid behavior. Below a temperature Tf ~ 6 K, the electrical resistivity deviates from a linear dependence. We found that the low-temperature feature centered at T = Tf shows a pressure dependence dTf/dP ~ 30 mK/kbar which is typical of canonical spin glasses. This interplay between spin-glass-like and non-Fermi liquid behavior was observed in both CeRhSn and a Ce0.9La0.1RhSn alloy.