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Vertical Tunnel Junction Embedding a Spin Crossover Molecular Film

Abstract : Thin films of a molecular spin crossover (SCO) Iron(II) complex featuring a high transition temperature are grown by sublimation in high vacuum on TSAu and investigated by X-ray and UV photoelectron spectroscopies. Temperature-dependent studies demonstrate that the thermally induced spin crossover behavior is preserved in thin films. A large-area ultrathin switchable spin crossover molecular vertical tunnel junction with top electrodes of the liquid eutectic of gallium and indium, for which the spin-state switching of the films induces a two orders of magnitude change in the tunneling current density flowing through the junction, is reported here. The results on large-area junctions, rationalized by density functional theory calculations, demonstrate the high potential of SCO-based switchable molecular junctions as functional devices.
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Submitted on : Wednesday, February 3, 2021 - 3:30:17 PM
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Lorenzo Poggini, Mathieu Gonidec, Juan González-Estefan, Gilles Pécastaings, Benoît Gobaut, et al.. Vertical Tunnel Junction Embedding a Spin Crossover Molecular Film. Advanced Electronic Materials, Wiley, 2018, 4 (12), 1800204 (8 p.). ⟨10.1002/aelm.201800204⟩. ⟨hal-01934788⟩



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