149141 20251017144628.0 doi 10.3390/nano11061478 sideral 127268 ART-2021-127268 eng Jiménez-Cavero P. (orcid)0000-0003-0400-8600 Strong crystallographic influence on spin hall mechanism in pld-grown iro2 thin films 2021 Access copy available to the general public Unrestricted Spin-to-charge conversion is a central process in the emerging field of spintronics. One of its main applications is the electrical detection of spin currents, and for this, the inverse spin Hall effect (ISHE) has become one of the preferred methods. We studied the thickness dependence of the ISHE in iridium oxide (IrO2 ) thin films, producing spin currents by means of the spin Seebeck effect in ¿-Fe2 O3 /IrO2 bilayers prepared by pulsed laser deposition (PLD). The observed ISHE charge current density, which features a maximum as a consequence of the spin diffusion length scale, follows the typical behaviour of spin-Hall-related phenomena. By fitting to the theory developed by Castel et al., we find that the spin Hall angle ¿SH scales proportionally to the thin film resistivity, ¿SH ¿ ¿c, and obtains a value for the spin diffusion length ¿IrO2 of ¿IrO2 = 3.3(7) nm. In addition, we observe a negative ¿SH for every studied thickness and temperature, unlike previously reported works, which brings the possibility of tuning the desired functionality of high-resistance spin-Hall-based devices. We attribute this behaviour to the textured growth of the sample in the context of a highly anisotropic value of the spin Hall conductivity in this material. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. info:eu-repo/grantAgreement/ES/DGA/E26 info:eu-repo/grantAgreement/ES/MCIU/MAT2017-82970-C2-2-R info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 5.719 2021 PHYSICS, APPLIED 37 / 161 = 0.23 2021 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 53 / 108 = 0.491 2021 Q2 T2 CHEMISTRY, MULTIDISCIPLINARY 55 / 179 = 0.307 2021 Q2 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 109 / 344 = 0.317 2021 Q2 T1 0.839 2021 Materials Science (miscellaneous) 2021 Q1 Chemical Engineering (miscellaneous) 2021 Q1 6.6 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Lucas I. Universidad de Zaragoza (orcid)0000-0003-0271-8713 Ara-Arteaga J. Ibarra M.R. Universidad de Zaragoza (orcid)0000-0003-0681-8260 Algarabel P.A. (orcid)0000-0002-4698-3378 Morellón L. Universidad de Zaragoza (orcid)0000-0003-3724-508X 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 11, 6 (2021), 1478 [10 pp] Nanomaterials (Basel) Nanomaterials 2079-4991 1066248 http://zaguan.unizar.es/record/149141/files/texto_completo.pdf Versión publicada 2537304 http://zaguan.unizar.es/record/149141/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:149141 articulos driver 2025-10-17-14:25:12 ARTICLE