102084 20230313141236.0 doi 10.1021/acsnano.0c03167 sideral 119589 ART-2020-119589 eng Gimeno, Ignacio (orcid)0000-0002-6184-3920 Enhanced Molecular Spin-Photon Coupling at Superconducting Nanoconstrictions 2020 Access copy available to the general public Unrestricted We combine top-down and bottom-up nanolithography to optimize the coupling of small molecular spin ensembles to 1.4 GHz on-chip superconducting resonators. Nanoscopic constrictions, fabricated with a focused ion beam at the central transmission line, locally concentrate the microwave magnetic field. Drops of free-radical molecules have been deposited from solution onto the circuits. For the smallest ones, the molecules were delivered at the relevant circuit areas by means of an atomic force microscope. The number of spins Neff effectively coupled to each device was accurately determined combining Scanning Electron and Atomic Force Microscopies. The collective spin-photon coupling constant has been determined for samples with Neff ranging between 2 × 106 and 1012 spins, and for temperatures down to 44 mK. The results show the well-known collective enhancement of the coupling proportional to the square root of Neff. The average coupling of individual spins is enhanced by more than 4 orders of magnitude (from 4 mHz up to above 180 Hz), when the transmission line width is reduced from 400 µm down to 42 nm, and reaches maximum values near 1 kHz for molecules located on the smallest nanoconstrictions. info:eu-repo/grantAgreement/ES/DGA/E09-17R info:eu-repo/grantAgreement/ES/DGA-FEDER/E35-20R info:eu-repo/grantAgreement/ES/DGA/LMP55-18 info:eu-repo/grantAgreement/ES/MICINN/MAT2017-89993-R info:eu-repo/grantAgreement/ES/MICINN/RTI2018-096075-B-C21 info:eu-repo/grantAgreement/ES/MINECO/MAT2017-88358-C3-1-R info:eu-repo/grantAgreement/ES/MINECO/PCI2018-093116 info:eu-repo/grantAgreement/EUR/MOLSPIN-COST/CA15128 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 15.881 2020 CHEMISTRY, MULTIDISCIPLINARY 14 / 178 = 0.079 2020 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 21 / 333 = 0.063 2020 Q1 T1 CHEMISTRY, PHYSICAL 12 / 162 = 0.074 2020 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 11 / 106 = 0.104 2020 Q1 T1 5.554 2020 Engineering (miscellaneous) 2020 Q1 Physics and Astronomy (miscellaneous) 2020 Q1 Nanoscience and Nanotechnology 2020 Q1 Materials Science (miscellaneous) 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Kersten, Wenzel Pallarés, María C. Universidad de Zaragoza Hermosilla, Pablo Universidad de Zaragoza (orcid)0000-0003-2249-6054 Martínez-Pérez, María José Universidad de Zaragoza (orcid)0000-0002-8125-877X Jenkins, Mark D. Angerer, Andreas Sánchez-Azqueta, Carlos Universidad de Zaragoza (orcid)0000-0002-8236-825X Zueco, David Universidad de Zaragoza (orcid)0000-0003-4478-1948 Majer, Johannes Lostao, Anabel Universidad de Zaragoza (orcid)0000-0001-7460-5916 Luis, Fernando Universidad de Zaragoza (orcid)0000-0001-6284-0521 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 1002 060 Universidad de Zaragoza Dpto. Bioq.Biolog.Mol. Celular Área Bioquímica y Biolog.Mole. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 14, 7 (2020), 8707-8715 ACS Nano ACS NANO 1936-0851 4473983 http://zaguan.unizar.es/record/102084/files/texto_completo.pdf Versión publicada 3105222 http://zaguan.unizar.es/record/102084/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:102084 articulos driver 2023-03-13-13:55:30 ARTICLE