Anisotropic magnetoresistance in spin–orbit semimetal SrIrO 3

Dirk J. Groenendijk, Nicola Manca, Joeri de Bruijckere, Ana Mafalda R.V.L. Monteiro, Rocco Gaudenzi, Herre S.J. van der Zant, Andrea D. Caviglia

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Abstract

SrIrO 3, the three-dimensional member of the Ruddlesden–Popper iridates, is a paramagnetic semimetal characterised by a the delicate interplay between spin–orbit coupling and Coulomb repulsion. In this work, we study the anisotropic magnetoresistance (AMR) of SrIrO 3 thin films, which is closely linked to spin–orbit coupling and probes correlations between electronic transport, magnetic order and orbital states. We show that the low-temperature negative magnetoresistance is anisotropic with respect to the magnetic field orientation, and its angular dependence reveals the appearance of a fourfold symmetric component above a critical magnetic field. We show that this AMR component is of magnetocrystalline origin, and attribute the observed transition to a field-induced magnetic state in SrIrO 3.

Original languageEnglish
Article number627
Number of pages7
JournalEuropean Physical Journal Plus
Volume135
Issue number8
DOIs
Publication statusPublished - 2020

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