Magnetotransport in the CeIrIn${_5}$ system: The influence of antiferromagnetic fluctuations

TL;DR

This paper investigates how antiferromagnetic fluctuations affect magnetotransport properties in the heavy-fermion superconductor CeIrIn$_5$, revealing anomalous behaviors and precursor states related to unconventional superconductivity.

Contribution

It provides new insights into the influence of antiferromagnetic fluctuations on magnetotransport and identifies pseudogap-like precursor states in CeIrIn$_5$, advancing understanding of heavy-fermion superconductors.

Findings

Anomalous normal-state magnetotransport observed.

Signatures of pseudogap-like precursor state to superconductivity.

Evidence for two distinct scattering times affecting transport.

Abstract

We present an overview of magnetotransport measurements on the heavy-fermion superconductor CeIrIn$_5$. Sensitive measurements of the Hall effect and magnetoresistance (MR) are used to elucidate the low temperature phase diagram of this system. The normal-state magnetotransport is highly anomalous, and experimental signatures of a pseudogap-like precursor state to superconductivity as well as evidence for two distinct scattering times governing the Hall effect and the MR are observed. Our observations point out the influence of antiferromagnetic fluctuations on the magnetotransport in this class of materials. The implications of these findings, both in the context of unconventional superconductivity in heavy-fermion systems as well as in relation to the high temperature superconducting cuprates are discussed.