Magnetism and superconductivity in strongly correlated CeRhIn5

TL;DR

This paper investigates the complex relationship between magnetism and unconventional superconductivity in CeRhIn5, revealing that their interplay cannot be explained by simple Fermi-surface competition, thus requiring new theoretical insights.

Contribution

It provides experimental evidence that the magnetism and superconductivity in CeRhIn5 involve the 4f electron and cannot be understood through existing simple models.

Findings

Magnetism and superconductivity are intertwined via 4f electrons.

Simple Fermi-surface competition models are insufficient.

New conceptual frameworks are needed to explain the phenomena.

Abstract

Specific heat studies of CeRhIn5 as functions of pressure and magnetic field have been used to explore the relationship between magnetism and unconventional superconductivity, both of which involve the 4f electron of Ce. Results of these studies cannot be understood as a simple competition for Fermi-surface states and require a new conceptual framework.