Phase transitions in spin-crossover thin films probed by graphene transport measurements

Journal article (2017)

Authors

J. Dugay QN/van der Zant Lab - AS
M Giménez-Marqués Université de Versailles St-Quentin, Universidad de Valencia (ICMol)
T. Kozlova QN/Zandbergen Lab
H.W. Zandbergen QN/Zandbergen Lab
E Coronado Universidad de Valencia (ICMol)
H.S.J. van der Zant QN/van der Zant Lab - AS
Research Group
QN/van der Zant Lab (AS) (TU Delft)
Nanoparticles Graphene Molecular electronics Bistability Molecular spintronics Spin-crossover
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Published Date

2017

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/van der Zant Lab

Abstract

Future multifunctional hybrid devices might combine switchable molecules and 2D material-based devices. Spin-crossover compounds are of particular interest in this context since they exhibit bistability and memory effects at room temperature while responding to numerous external stimuli. Atomically thin 2D materials such as graphene attract a lot of attention for their fascinating electrical, optical, and mechanical properties, but also for their reliability for room-temperature operations. Here, we demonstrate that thermally induced spin-state switching of spin-crossover nanoparticle thin films can be monitored through the electrical transport properties of graphene lying underneath the films. Model calculations indicate that the charge carrier scattering mechanism in graphene is sensitive to the spin-state dependence of the relative dielectric constants of the spin-crossover nanoparticles. This graphene sensor approach can be applied to a wide class of (molecular) systems with tunable electronic polarizabilities.