Pressure effect on magnetism in CeTe$_{1.82}$

Details Pressure effect on magnetism in CeTe$_{1.82}$ Pressure effect on magnetism in CeTe$_{1.82}$

2003-04-29

arxiv.org/abs/cond-mat/0304652v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, including 4 figures

Scientific paper

We report the normal-state transport and magnetic properties of a pressure-induced superconductor CeTe$_{1.82}$. We found that the applied pressure is required to increase the Kondo temperature scale ($T^*_{\rm K} \sim$ 170 K), associated with the two-dimensional motion of the carriers confined within the Te plane. Both the short-range ferromagnetic ordering temperature ($T_{\rm SRF} \sim$ 6 K) and the long-range antiferromagnetic transition temperature ($T_{\rm N} \sim$ 4.3 K) are slightly increased with pressure. We suggest that the application of pressure enhances a coupling between the 4$f$ and conduction electrons. We also found that the field effect on the transport under pressure is analogous to that at ambient pressure, where a large magnetoresistance is observed in the vicinity of $T_{\rm SRF}$.

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