Complex Materials for Molecular Spintronics Applications: Cobalt Bis(dioxolene) Valence Tautomers, from Molecules to Polymers

ORAL

Abstract

Using first principles calculations we predict a complex multifunctional behavior in cobalt bis(dioxolene) valence tautomeric compounds. Molecular spin-state switching is shown to dramatically alter electronic properties and corresponding transport properties. This spin state dependence has been demonstrated for technologically-relevant coordination polymers of valence tautomers as well as for novel conjugated polymers with valence tautomeric functionalization. As a result these materials are proposed as promising candidates for spintronic devices that can couple magnetic bistability with novel electrical and spin conduction properties. Our findings pave the way to the fundamental understanding and future design of active multifunctional organic materials for spintronics applications.

*NSF-CCI Center for Molecular Spintronics (CHE-0924966)

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Authors

  • M. Buongiorno-Nardelli

    • Department of Physics, University of North Texas
    • Department of Physics and Department of Chemistry, University of North Texas, Denton, TX 76203
    • University of North Texas, Denton, TX
    • University of North Texas
    • Department of Physics and Department of Chemistry, University of North Texas
    • Univ. of North Texas and Oak Ridge National Laboratory

  • Arrigo Calzolari

    • Istituto Nanoscienze CNR-NANO-S3, Modena, Italy
    • Centro S3 - CNR-NANO, Modena, Italy
    • Istituto Nanoscienze, CNR-NANO S3 Center I-41125, Modena Italy
    • Istituto Nanoscienze CNR-NANO-S3
    • CNR-NANO, Instituto Nanoscienze, Modena, Italy
    • Centro S3, CNR Istituto di Nanoscienze, Modena, Italy

  • Yifeng Chen

    • North Carolina State University
    • Department of Physics, North Carolina State University

  • Daniel Dougherty

    • North Carolina State University

  • David Shultz

    • North Carolina State University
    • Department of Chemistry, North Carolina State University