# Quasi two-dimensional Fermi surface topography of the delafossite PdRhO$_2$

## TL;DR

This study combines experimental techniques and band structure calculations to reveal that PdRhO₂ has a nearly cylindrical, quasi-two-dimensional Fermi surface with a rounded hexagonal shape, providing detailed topography of its electronic structure.

## Contribution

It presents the first detailed topographical mapping of PdRhO₂'s Fermi surface using combined de Haas-van Alphen and ARPES measurements with ab initio calculations.

## Key findings

- Fermi surface is nearly cylindrical with rounded hexagonal cross section.
- Encloses a Luttinger volume of 1.00(1) electrons per formula unit.
- High-resolution data obtained from small single crystals.

## Abstract

We report on a combined study of the de Haas-van Alphen effect and angle resolved photoemission spectroscopy on single crystals of the metallic delafossite PdRhO$_2$ rounded off by \textit{ab initio} band structure calculations. A high sensitivity torque magnetometry setup with SQUID readout and synchrotron-based photoemission with a light spot size of $~50\,\mu\mathrm{m}$ enabled high resolution data to be obtained from samples as small as $150\times100\times20\,(\mu\mathrm{m})^3$. The Fermi surface shape is nearly cylindrical with a rounded hexagonal cross section enclosing a Luttinger volume of 1.00(1) electrons per formula unit.