Temperature Dependent Conductance Measurements of Co Spin Crossover Molecules

ORAL

Abstract

Spin crossover (SCO) complexes are functional materials that can be switched between a low spin and a high spin state by an external stimulus. They are a promising candidate for a wide range of applications, including molecular-based switches, sensors and memory devices. Accompanying the change in spin states, there is often an observed change in the conductance as well, which makes SCO molecules attractive for organic molecular-based spintronics. In this work we will present a systematic study of temperature dependent conductance measurements for two types of SCO molecules, [Co(SQ)(Cat)(4-CN-py)2] and [Co(SQ)(Cat)(3-tpp)2]. The thin film samples were prepared on interdigitated devices with electrodes separated by 5 µm, using different solvents in an effort to study the solvent effects. The conductance change induced by light and electric field stimulation was also studied. We noticed that the electric conductance shows intriguing properties near the transition temperature and this could be due to the switching of spin states through an electric field. 

*National Science Foundation (NSF)

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Presenters

  • Jared Phillips

    • Department of physics, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202
    • Indiana University - Purdue University
    • Phys IUPUI

Authors

  • Jared Phillips

    • Department of physics, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202
    • Indiana University - Purdue University
    • Phys IUPUI

  • Saeed Yazdani

    • Indiana University - Purdue University

  • Wyatt Highland

    • Indiana University - Purdue University

  • Thilini K Ekanayaka

    • Department of Physics and Astronomy, University of Nebraska - Lincoln
    • University of Nebraska - Lincoln

  • Ping Wang

    • Florida State University
    • University of Florida

  • Michael Shatruk

    • Florida State University

  • Ruihua Cheng

    • Indiana University Purdue University Indianapolis
    • Department of physics, Indiana University Purdue University Indianapolis, Indianapolis, IN 46202
    • Indiana University - Purdue University
    • Phys IUPUI

  • Peter A Dowben

    • University of Nebraska - Lincoln
    • Department of Physics and Astronomy, University of Nebraska - Lincoln
    • Department of Physics and Astronomy; University of Nebraska-Lincoln
    • Department of Physics and Astronomy, Jorgensen Hall, University of Nebraska, NE 68588, USA
    • Department of Physics and Astronomy, University of Nebraska, Lincoln