Unconventional Superconductivity in Heavy Fermion Systems

TL;DR

This paper reviews how pressure-induced studies reveal complex phases of magnetism and unconventional superconductivity in heavy-fermion systems, highlighting their phase diagrams and interplay at magnetic criticality.

Contribution

It provides a comprehensive review of the emergent phases and phase diagrams of magnetism and superconductivity in heavy-fermion systems under pressure, emphasizing novel insights into their interplay.

Findings

Rich variety of phenomena in heavy-fermion ground states

Distinct phase diagrams of CeCu2Si2, CeRhIn5, and CeIn3

Insights into the interplay between magnetism and superconductivity

Abstract

We review the studies on the emergent phases of superconductvity and magnetism in the $f$-electron derived heavy-fermion (HF) systems by means of the nuclear-quadrupole-resonance (NQR) under pressure. These studies have unraveled a rich variety of the phenomena in the ground state of HF systems. In this article, we highlight the novel phase diagrams of magnetism and unconventional superconductivity (SC) in CeCu$_2$Si$_2$, HF antiferromagnets CeRhIn$_5$, and CeIn$_3$. A new light is shed on the difference and common features on the interplay between magnetism and SC on the magnetic criticality.