title: Spin doping using transition metal phthalocyanine molecules.
abstract: Molecular spins have become key enablers for exploring magnetic interactions, quantum information processes and many-body effects in metals. Metal-organic molecules, in particular, let the spin state of the core metal ion to be modified according to its organic environment, allowing localized magnetic moments to emerge as functional entities with radically different properties from its simple atomic counterparts. Here, using and preserving the integrity of transition metal phthalocyanine high-spin complexes, we demonstrate the magnetic doping of gold thin films, effectively creating a new ground state. We demonstrate it by electrical transport measurements that are sensitive to the scattering of itinerant electrons with magnetic impurities, such as Kondo effect and weak antilocalization. Our work expands in a simple and powerful way the classes of materials that can be used as magnetic dopants, opening a new channel to couple the wide range of molecular properties with spin phenomena at a functional scale.
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Atxabal
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Ribeiro
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.
authors.forename: S
authors.initials: S
authors.lastname: Parui
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Urreta
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Sagasta
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.|CAS Center for Excellence in Nanoscience, Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, P. R. China.
authors.forename: X
authors.initials: X
authors.lastname: Sun
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Llopis
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.|IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Casanova
authors.affiliation: CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain.|IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain.
authors.forename: L E
authors.initials: LE
authors.lastname: Hueso