Shubnikov-de Haas measurements on LuRh2Si2

TL;DR

This study uses Shubnikov-de Haas measurements on LuRh2Si2 to analyze its Fermi surface, revealing limited agreement with band structure calculations and providing insights relevant to understanding YbRh2Si2's electronic properties.

Contribution

First detailed quantum oscillation study on LuRh2Si2 highlighting discrepancies with theoretical models and informing heavy-fermion system analyses.

Findings

Extensive set of quantum oscillation orbits identified.

Limited agreement with band structure calculations.

Data informs understanding of YbRh2Si2 Fermi surface discrepancies.

Abstract

We present Shubnikov-de Haas measurements on LuRh2Si2, the non-magnetic reference compound to the prototypical heavy-fermion system YbRh2Si2. We find an extensive set of orbits with clear angular dependences. Surprisingly, the agreement with non-correlated band structure calculations is limited. This may be related to an uncertainty in the calculations arising from a lack of knowledge about the exact Si atom position in the unit cell. The data on LuRh2Si2 provide an extensive basis for the interpretation of measurements on YbRh2Si2 indicative of discrepancies between the high-field Fermi surface of YbRh2Si2 and the "small" Fermi surface configuration.