title: Measuring the Spin-Polarization Power of a Single Chiral Molecule.
abstract: The electronic spin filtering capability of a single chiral helical peptide is measured. A ferromagnetic electrode source is employed to inject spin-polarized electrons in an asymmetric single-molecule junction bridging an α-helical peptide sequence of known chirality. The conductance comparison between both isomers allows the direct determination of the polarization power of an individual chiral molecule.
authors.affiliation: Department of Material Science and Physical Chemistry, University of Barcelona, Barcelona, 08028, Catalonia, Spain.|Institute for Bioengineering of Catalonia (IBEC), Barcelona, 08028, Catalonia, Spain.|Centro Investigación Biomédica en Red (CIBER-BBN), Campus Río Ebro-Edificio I+D Poeta Mariano Esquillor s/n, 50018, Zaragoza, Spain.
authors.forename: Albert C
authors.initials: AC
authors.lastname: Aragonès
authors.affiliation: Centro de Física, Instituto Venezolano de Investigaciones Cientificas (IVIC), Apartado 21827, Caracas, 1020A, Venezuela.|School of Physics Yachay Tech, Yachay City of Knowledge, 100119, Urcuqui, Ecuador.
authors.forename: Ernesto
authors.initials: E
authors.lastname: Medina
authors.affiliation: Department of Material Science and Physical Chemistry, University of Barcelona, Barcelona, 08028, Catalonia, Spain.
authors.forename: Miriam
authors.initials: M
authors.lastname: Ferrer-Huerta
authors.affiliation: Department of Material Science and Physical Chemistry, University of Barcelona, Barcelona, 08028, Catalonia, Spain.
authors.forename: Nuria
authors.initials: N
authors.lastname: Gimeno
authors.affiliation: Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028, Barcelona, Spain.
authors.forename: Meritxell
authors.initials: M
authors.lastname: Teixidó
authors.affiliation: Arizona State University School of Molecular Sciences, Physical Sciences Center PSD-D102 and Biodesign Institute Center for Bioelectronics and Biosensors, Tempe, AZ 85287, USA.
authors.forename: Julio L
authors.initials: JL
authors.lastname: Palma
authors.affiliation: Arizona State University School of Molecular Sciences, Physical Sciences Center PSD-D102 and Biodesign Institute Center for Bioelectronics and Biosensors, Tempe, AZ 85287, USA.
authors.forename: Nongjian
authors.initials: N
authors.lastname: Tao
authors.affiliation: Donostia International Physics Center (DIPC), Manuel Lardizabal Ibilbidea, 4, 20018, Donostia, Gipuzkoa, Spain.
authors.forename: Jesus M
authors.initials: JM
authors.lastname: Ugalde
authors.affiliation: Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028, Barcelona, Spain.|Departament de Química Orgánica, Universitat de Barcelona, Barcelona, 08028, Catalonia, Spain.
authors.forename: Ernest
authors.initials: E
authors.lastname: Giralt
authors.affiliation: Department of Material Science and Physical Chemistry, University of Barcelona, Barcelona, 08028, Catalonia, Spain.|Institute for Bioengineering of Catalonia (IBEC), Barcelona, 08028, Catalonia, Spain.|Centro Investigación Biomédica en Red (CIBER-BBN), Campus Río Ebro-Edificio I+D Poeta Mariano Esquillor s/n, 50018, Zaragoza, Spain.
authors.forename: Ismael
authors.initials: I
authors.lastname: Díez-Pérez
authors.affiliation: Arizona State University School of Molecular Sciences, Physical Sciences Center PSD-D102 and Biodesign Institute Center for Bioelectronics and Biosensors, Tempe, AZ 85287, USA.|Donostia International Physics Center (DIPC), Manuel Lardizabal Ibilbidea, 4, 20018, Donostia, Gipuzkoa, Spain.
authors.forename: Vladimiro
authors.initials: V
authors.lastname: Mujica
mesh_terms: D000595:Amino Acid Sequence; D004553:Electric Conductivity; D004566:Electrodes; D004583:Electrons; D006046:Gold / Q000737:chemistry; D009532:Nickel / Q000737:chemistry; D010455:Peptides / Q000737:chemistry*; D013113:Spin Labels; D013237:Stereoisomerism
chemical_list: D010455:Peptides; D013113:Spin Labels; D006046:Gold; D009532:Nickel
keywords: alpha-helical peptides; chiral transport; single-molecule wires; spin-polarization power; spin-polarized transmission