Analysis of the normal state magnetotransport in CeIrIn${_5}$

TL;DR

This paper investigates the magnetotransport properties of CeIrIn5 in its normal state, revealing complex behavior of the Hall effect and magnetoresistance, and compares these findings to CeCoIn5 to understand their differing phase diagrams.

Contribution

It provides a detailed analysis of the magnetotransport in CeIrIn5, highlighting the non-trivial relationship between Hall effect and magnetoresistance, and introduces a scaling law for the Hall coefficient.

Findings

Hall effect and magnetoresistance are not uniquely correlated.

The Hall coefficient follows a specific scaling law with field and temperature.

Differences in phase diagrams between CeIrIn5 and CeCoIn5 are discussed.

Abstract

We present an analysis of the normal state magnetotransport in the heavy fermion superconductor CeIrIn${_5}$. The Hall effect and the transverse magnetoresistance in this material do not appear to be uniquely correlated, as inferred from the field dependence of the current ratio ($R_{\sigma} = \sigma_{xy} / \sigma_{xx}^2 H$). The Hall coefficient is seen to satisfy a scaling equation of the form $R_H = f [H / (a + b T^c)]$. These results are compared to those observed earlier in CeCoIn$_5$, and are discussed in terms of the contrasting phase diagram which the CeIrIn$_5$ system exhibits in relation to its Co counterpart.