title: Manipulating the Topological Interface by Molecular Adsorbates: Adsorption of Co-Phthalocyanine on Bi2Se3.
abstract: Topological insulators are a promising class of materials for applications in the field of spintronics. New perspectives in this field can arise from interfacing metal-organic molecules with the topological insulator spin-momentum locked surface states, which can be perturbed enhancing or suppressing spintronics-relevant properties such as spin coherence. Here we show results from an angle-resolved photemission spectroscopy (ARPES) and scanning tunnelling microscopy (STM) study of the prototypical cobalt phthalocyanine (CoPc)/Bi2Se3 interface. We demonstrate that that the hybrid interface can act on the topological protection of the surface and bury the Dirac cone below the first quintuple layer.
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Universitè Paris-Sud, Université Paris-Saclay , 91405 Orsay Cedex, France.|Laboratory Micro & Nano-Carbon, Elettra - Sincrotrone Trieste S.C.p.A., s.s.14 Km 163.5, 34149 Trieste, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Caputo
authors.affiliation: Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.|Laboratory Micro & Nano-Carbon, Elettra - Sincrotrone Trieste S.C.p.A., s.s.14 Km 163.5, 34149 Trieste, Italy.
authors.forename: Mirko
authors.initials: M
authors.lastname: Panighel
authors.affiliation: Dipartimento di Fisica, Università di Roma La Sapienza , Piazzale A. Moro 5, 00185 Roma, Italy.|Institut Néel, CNRS/UGA UPR2940, 25 Rue des Martyrs BP 166, 38042 Grenoble, France.
authors.forename: Simone
authors.initials: S
authors.lastname: Lisi
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Universitè Paris-Sud, Université Paris-Saclay , 91405 Orsay Cedex, France.|Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP48, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Lama
authors.initials: L
authors.lastname: Khalil
authors.affiliation: Laboratory Micro & Nano-Carbon, Elettra - Sincrotrone Trieste S.C.p.A., s.s.14 Km 163.5, 34149 Trieste, Italy.
authors.forename: Giovanni Di
authors.initials: GD
authors.lastname: Santo
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Universitè Paris-Sud, Université Paris-Saclay , 91405 Orsay Cedex, France.
authors.forename: Evangelos
authors.initials: E
authors.lastname: Papalazarou
authors.affiliation: Institute of Electronic Materials Technology, 01-919 Warsaw, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Hruban
authors.affiliation: Laboratoire des Solides Irradiés, Ecole Polytechnique, CNRS, CEA, Université Paris-Saclay , 91128 Palaiseau Cedex, France.
authors.forename: Marcin
authors.initials: M
authors.lastname: Konczykowski
authors.affiliation: Department of Physics, The City College of New York, CUNY , New York, New York 10031, United States.
authors.forename: Lia
authors.initials: L
authors.lastname: Krusin-Elbaum
authors.affiliation: Institute of Catalisys and Inorganic Chemistry, Institute of Physics, Azerbaijan National Academy of Sciences , AZ-1143, Baku, Azerbaijan.
authors.forename: Ziya S
authors.initials: ZS
authors.lastname: Aliev
authors.affiliation: Institute of Catalisys and Inorganic Chemistry, Institute of Physics, Azerbaijan National Academy of Sciences , AZ-1143, Baku, Azerbaijan.
authors.forename: Mahammad B
authors.initials: MB
authors.lastname: Babanly
authors.affiliation: Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastian, Spain.|Tomsk State University , 634050 Tomsk, Russia.
authors.forename: Mikhail M
authors.initials: MM
authors.lastname: Otrokov
authors.affiliation: Department of Physics, University of Calabria , via ponte Bucci 31/C, 87036 Rende (CS), Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Politano
authors.affiliation: Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastian, Spain.|Department of Materials Physics, University of the Basque Country UPV/EHU , 20018 Donostia-San Sebastian, Spain.|Centro de Fı́sica de Materiales (CFM), Materials Physics Center (MPC), Centro Mixto CSIC-UPV/EHU, 20018 Donostia-San Sebastian, Spain.|Saint Petersburg State University , 198504 Saint Petersburg, Russia.
authors.forename: Evgueni V
authors.initials: EV
authors.lastname: Chulkov
authors.affiliation: Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastian, Spain.|Department of Materials Physics, University of the Basque Country UPV/EHU , 20018 Donostia-San Sebastian, Spain.|Centro de Fı́sica de Materiales (CFM), Materials Physics Center (MPC), Centro Mixto CSIC-UPV/EHU, 20018 Donostia-San Sebastian, Spain.
authors.forename: Andrés
authors.initials: A
authors.lastname: Arnau
authors.affiliation: Institute of Optical Materials and Technologies, "Acad. G. Bonchev" Str 109, Sofia, Bulgaria.
authors.forename: Vera
authors.initials: V
authors.lastname: Marinova
authors.affiliation: Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, Area Science Park, s.s.14, Km 163.5, 34149 Trieste, Italy.|International Centre for Theoretical Physics, Strada Costiera 11, 34100 Trieste, Italy.
authors.forename: Pranab K
authors.initials: PK
authors.lastname: Das
authors.affiliation: Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, Area Science Park, s.s.14, Km 163.5, 34149 Trieste, Italy.
authors.forename: Jun
authors.initials: J
authors.lastname: Fujii
authors.affiliation: Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, Area Science Park, s.s.14, Km 163.5, 34149 Trieste, Italy.
authors.forename: Ivana
authors.initials: I
authors.lastname: Vobornik
authors.affiliation: Laboratoire des Solides Irradiés, Ecole Polytechnique, CNRS, CEA, Université Paris-Saclay , 91128 Palaiseau Cedex, France.
authors.forename: Luca
authors.initials: L
authors.lastname: Perfetti
authors.affiliation: Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.|ICREA - Instituciò Catalana de Recerca i Estudis Avancast, Lluis Companys 23, 08010 Barcelona, Spain.
authors.forename: Aitor
authors.initials: A
authors.lastname: Mugarza
authors.affiliation: Laboratory Micro & Nano-Carbon, Elettra - Sincrotrone Trieste S.C.p.A., s.s.14 Km 163.5, 34149 Trieste, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Goldoni
authors.affiliation: Laboratoire de Physique des Solides, CNRS, Universitè Paris-Sud, Université Paris-Saclay , 91405 Orsay Cedex, France.
authors.forename: Marino
authors.initials: M
authors.lastname: Marsi
keywords: ARPES; Dirac cone; Topological insulator; charge transfer; phthalocyanine; surface states