Pressure Evolution of a Field Induced Fermi Surface Reconstruction and of the Neel Critical Field in CeIn3

TL;DR

This study investigates how high pressure and magnetic fields influence the Fermi surface and Neel critical field in CeIn3, revealing a pressure-dependent anomaly linked to Fermi surface reconstruction.

Contribution

It provides the first detailed high-pressure skin depth measurements of CeIn3 up to 64 T, exploring the pressure evolution of Fermi surface and magnetic phase boundaries.

Findings

An anomaly in skin depth at 45 T shifts with pressure.

The Neel critical field varies with pressure and merges with phase boundaries.

Evidence suggests a Fermi surface reconstruction related to the anomaly.

Abstract

We report high-pressure skin depth measurements on the heavy fermion material CeIn3 in magnetic fields up to 64 T using a self-resonant tank circuit based on a tunnel diode oscillator. At ambient pressure, an anomaly in the skin depth is seen at 45 T. The field where this anomaly occurs decreases with applied pressure until approximately 1.0 GPa, where it begins to increase before merging with the antiferromagnetic phase boundary. Possible origins for this transport anomaly are explored in terms of a Fermi surface reconstruction. The critical magnetic field at which the Neel ordered phase is suppressed is also mapped as a function of pressure and extrapolates to the previous ambient pressure measurements at high magnetic fields and high pressure measurements at zero magnetic field.