70042 20191212100703.0 doi 10.1038/s41467-018-03706-x sideral 105211 ART-2018-105211 eng Sørensen, M.A. Chemical tunnel-splitting-engineering in a dysprosium-based molecular nanomagnet 2018 Access copy available to the general public Unrestricted Total control over the electronic spin relaxation in molecular nanomagnets is the ultimate goal in the design of new molecules with evermore realizable applications in spin-based devices. For single-ion lanthanide systems, with strong spin-orbit coupling, the potential applications are linked to the energetic structure of the crystal field levels and quantum tunneling within the ground state. Structural engineering of the timescale of these tunneling events via appropriate design of crystal fields represents a fundamental challenge for the synthetic chemist, since tunnel splittings are expected to be suppressed by crystal field environments with sufficiently high-order symmetry. Here, we report the long missing study of the effect of a non-linear (C 4) to pseudo-linear (D 4d) change in crystal field symmetry in an otherwise chemically unaltered dysprosium complex. From a purely experimental study of crystal field levels and electronic spin dynamics at milliKelvin temperatures, we demonstrate the ensuing threefold reduction of the tunnel splitting. info:eu-repo/grantAgreement/ES/MINECO/MAT2017-83468-R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 11.878 2018 MULTIDISCIPLINARY SCIENCES 5 / 69 = 0.072 2018 Q1 T1 5.992 2018 Biochemistry, Genetics and Molecular Biology (miscellaneous) 2018 Q1 Physics and Astronomy (miscellaneous) 2018 Q1 Chemistry (miscellaneous) 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Hansen, U.B. Perfetti, M. Pedersen, K.S. Bartolomé, E. Simeoni, G.G. Mutka, H. Rols, S. Jeong, M. Zivkovic, I. Retuerto, M. (orcid)0000-0002-5999-341X Arauzo, A. Universidad de Zaragoza (orcid)0000-0002-6517-1236 Bartolomé, J. Universidad de Zaragoza Piligkos, S. Weihe , Hø. Doerrer, L.H. Van Slageren, J. Rønnow, H.M. Lefmann, K. Bendix, J. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 9, 1 (2018), 1292[9 pp] NATURE COMMUNICATIONS Nature Communications 2041-1723 2079592 http://zaguan.unizar.es/record/70042/files/texto_completo.pdf Versión publicada 73725 http://zaguan.unizar.es/record/70042/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:70042 articulos driver 2019-12-12-10:05:15 ARTICLE