Electrical resistivity of ErB2under pressure

A Tong; D Nuzhina; C Resch; G Benka; A Bauer; C Pfleiderer

doi:10.1088/1361-648X/adc77a

Electrical resistivity of ErB₂under pressure

J Phys Condens Matter. 2025 Apr 22;37(19). doi: 10.1088/1361-648X/adc77a.

Authors

A Tong¹, D Nuzhina¹, C Resch¹, G Benka¹, A Bauer^{1

2}, C Pfleiderer^{1

2

3

4}

Affiliations

¹ Technical University of Munich, TUM School of Natural Sciences, Physics Department, Chair for the Topology of Correlated Systems, 85748 Garching, Germany.
² Centre for QuantumEngineering (ZQE), Technical University of Munich, 85748 Garching, Germany.
³ Munich Centre for Quantum Science and Technology (MCQST), Technical University of Munich, 85748 Garching, Germany.
⁴ Heinz Maier-Leibnitz Zentrum (MLZ), Technical University of Munich, 85748 Garching, Germany.

PMID: 40164105
DOI: 10.1088/1361-648X/adc77a

Abstract

DiboridesAB2crystallizing in the hexagonal C32 structure exhibit a wide range of magnetic and electronic properties depending on the choice of the elementAand the precise values of the lattice constantsaandc. ErB₂represents a typical rare-earth diboride, exhibiting easy-plane ferromagnetic order below 14 K. We report a study of the evolution of the electrical transport properties of ErB₂when tuning the lattice constants under pressures up to 5.6 GPa. Using Bridgman-type pressure cells with polycrystalline diamond anvils and steatite as the solid pressure medium, quasi-hydrostatic conditions are provided. We find that magnetic order is stabilized under pressure and discuss the influence of uniaxial components by comparing measurements on polycrystalline and single-crystalline samples.

Keywords: Bridgman anvil cell; electrical transport under pressure; ferromagnetic transition; rare-earth diboride.

Creative Commons Attribution license.