Phase diagram of CeSb2 from magnetostriction and magnetization measurements : evidence for ferrimagnetic and antiferromagnetic states
Abstract
Cerium diantimonide (CeSb2) is one of a family of rare-earth-based magnetic materials that exhibit metamagnetism, enabling control of the magnetic ground state through an applied magnetic field. At low temperatures, CeSb2 hosts a rich phase diagram with multiple magnetically ordered phases for many of which the order parameter is only poorly understood. In this paper, we report a study of its metamagnetic properties by scanning tunneling microscopy (STM) and magnetization measurements. We use STM measurements to characterize the sample magnetostriction with subpicometer resolution from magnetic field and temperature sweeps. This allows us to directly assess the bulk phase diagram as a function of field and temperature and relate spectroscopic features from tunneling spectroscopy to bulk phases. Our magnetostriction and magnetization measurements indicate that the low-temperature ground state at zero field is ferrimagnetic. Quasiparticle interference mapping shows evidence for a reconstruction of the electronic structure close to the Fermi energy upon entering the magnetically ordered phase.
Citation
Trainer , C , Abel , C , Bud'ko , S L , Canfield , P C & Wahl , P 2021 , ' Phase diagram of CeSb 2 from magnetostriction and magnetization measurements : evidence for ferrimagnetic and antiferromagnetic states ' , Physical Review. B, Condensed matter and materials physics , vol. 104 , no. 20 , 205134 . https://doi.org/10.1103/PhysRevB.104.205134
Publication
Physical Review. B, Condensed matter and materials physics
Status
Peer reviewed
ISSN
1098-0121Type
Journal article
Description
Funding: CT and PW acknowledge support from EPSRC through EP/R031924/1 and EP/T031441/1. Work at the Ames Laboratory (CA, SLB, PCC) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. The Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02- 07CH11358.Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.