Electronic structure of Ce2RhIn8 2D heavy Fermion system studied by angle resolved photoemission spectroscopy

TL;DR

This study uses angle-resolved photoemission spectroscopy to investigate the electronic structure of the heavy fermion superconductor Ce2RhIn8, revealing its 2D character and localized f electrons, which aids understanding of its properties.

Contribution

First detailed ARPES analysis of Ce2RhIn8 revealing its complex Fermi surface and 2D electronic structure with localized f electrons.

Findings

Fermi surface consists of multiple hole and electron pockets

No kz dispersion observed, indicating 2D electronic structure

Data supports localized f electron picture

Abstract

We use angle-resolved photoemission spectroscopy to study heavy fermion superconductor Ce2RhIn8. The Fermi surface is rather complicated and consists of several hole and electron pock- ets. We do not observe kz dispersion of Fermi sheets, which is consistent with 2D character of the electronic structure. Comparison of the ARPES data and band structure calculations points to a localized picture of f electrons. Our findings pave the way for understanding the transport and thermodynamical properties of this material.