Berry phase and de Haas - van Alphen effect in LaRhIn$_5$

TL;DR

This paper explains experimental magnetization data in LaRhIn5, revealing the first observation of the Berry phase in metals through the de Haas-van Alphen effect, highlighting the role of a small electron group near a band-contact line.

Contribution

It demonstrates the detection of the Berry phase in a metal via magnetization measurements, linking theoretical concepts with experimental data.

Findings

Observation of Berry phase in LaRhIn5

Identification of electron group near band-contact line

First experimental evidence of Berry phase in metals

Abstract

We explain the experimental data on the magnetization of $LaRhIn_5$ recently published by R. G. Goodrich et al. in Phys. Rev.Lett. {\bf 89}, 026401 (2002). We show that the magnetization of a small electron group associated with a band-contact line was detected in that paper. These data provide the first observation of the Berry phase of electrons in metals via the de Haas - van Alphen effect.