149139 20251017144624.0 doi 10.1039/d1nr04207f sideral 126521 ART-2021-126521 eng Arias Egido E. (orcid)0000-0002-0782-3160 Dimensionality-driven metal-insulator transition in spin-orbit-coupled IrO2 2021 Access copy available to the general public Unrestricted A metal-insulator transition is observed in spin-orbit-coupled IrO2 thin films upon reduction of the film thickness. In the epitaxially grown samples, the critical thickness (t ~ 1.5-2.2 nm) is found to depend on growth orientation (001), (100) or (110). Interestingly from the applied point of view, the insulating behavior is found even in polycrystalline ultrathin films. By analyzing the experimental electrical response with various theoretical models, we find good fits to the Efros-Shklovskii-VRH and the Arrhenius-type behaviors, which suggests an important role of electron correlations in determining the electrical properties of IrO2. Our magnetic measurements also point to a significant role of magnetic order. Altogether, our results would point to a mixed Slater- and Mott-type of insulator. © 2021 The Royal Society of Chemistry. info:eu-repo/grantAgreement/ES/DGA/E12-20R info:eu-repo/grantAgreement/ES/DGA/E28-20R info:eu-repo/grantAgreement/ES/MICINN/PID2020-115159GB-I00 info:eu-repo/grantAgreement/ES/MINECO/MAT2014-54425-R info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-R info:eu-repo/grantAgreement/ES/MINECO/MAT2017-83468-R info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es 8.307 2021 MATERIALS SCIENCE, MULTIDISCIPLINARY 70 / 344 = 0.203 2021 Q1 T1 PHYSICS, APPLIED 23 / 161 = 0.143 2021 Q1 T1 CHEMISTRY, MULTIDISCIPLINARY 37 / 179 = 0.207 2021 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 31 / 108 = 0.287 2021 Q2 T1 1.744 2021 Nanoscience and Nanotechnology 2021 Q1 Materials Science (miscellaneous) 2021 Q1 13.4 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Laguna Marco M.A. (orcid)0000-0003-4069-0395 Piquer Oliet C. (orcid)0000-0003-4239-2949 Jiménez Cavero P. (orcid)0000-0003-0400-8600 Lucas del Pozo I. Universidad de Zaragoza (orcid)0000-0003-0271-8713 Morellón Alquézar L. Universidad de Zaragoza (orcid)0000-0003-3724-508X Gallego F. Rivera-Calzada A. Cabero-Piris M. Santamaria J. Fabbris G. Haskel D. Boada R. Díaz-Moreno S. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 13, 40 (2021), 17125-17135 Nanoscale Nanoscale 2040-3364 5773498 http://zaguan.unizar.es/record/149139/files/texto_completo.pdf Versión publicada 2847608 http://zaguan.unizar.es/record/149139/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:149139 articulos driver 2025-10-17-14:23:07 ARTICLE