Strain Dependent Spin Hall Magnetoresistance in the Multiferroic Antiferromagnet BiFeO$_3$

Autor:	Sando, D., Chen, S., Paull, O., Xu, B., van Rijn, J. J. L., Xu, C., Xu, S., Appert, F., Juraszek, J., Bellaiche, L., Nagarajan, V., Banerjee, T.
Rok vydání:	2023
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
Popis:	The spin Hall magnetoresistance (SMR) of epitaxial BiFeO$_3$ thin films is investigated. SMR consistent with ferromagnetic interfacial states for BiFeO$_3$ films fabricated on (001) SrTiO$_3$ (R' BFO) and LaAlO$_3$ (T' BFO) substrates is found, albeit with different temperature dependencies. For T' BFO, the SMR is enhanced at room temperature, and decays with reduced temperatures. By contrast, R' BFO shows a monotonic decrease in SMR response with increasing temperature, mirroring the trend of a weak ferromagnet. Density functional theory shows that this difference originates from the coupling of the applied magnetic field to oxygen octahedral rotation (R') and spin (T') degrees of freedom. Comment: 14 pages incl. 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2308.12500 Zobrazit plný text záznamu View this record from Arxiv