Unidirectional electric field-induced spin-state switching in spin crossover based microelectronic devices

Constantin Lefter (1, 2) , Reasmey Phary Tan (3) , Julien Dugay (3) , Simon Tricard (1) , Gábor Molnár (1) , L. Salmon (1) , Julian Carrey (3) , William Nicolazzi (1, 4) , Aurelian Rotaru (5) , Azzedine Bousseksou (1)

1 LCC - Laboratoire de chimie de coordination
2 USU - Universitatea Stefan cel Mare Suceava
3 LPCNO - Laboratoire de physique et chimie des nano-objets
4 UT3 - Université Toulouse III - Paul Sabatier
5 AMNOL - Advanced Materials and Nanotechnology Laboratory [Suceava]

We report on a molecular spin-state switching phenomenon induced by an electric field in micrometric objects of the [Fe(Htrz)2(trz)](BF4) spin crossover complex, organized between interdigitated electrodes. By applying an electric field step of 40 kV/cm at temperatures within the thermal hysteresis region of the first-order spin transition, the iron(II) ions are switched from the metastable high spin to the stable low spin state obtaining a rather incomplete transition but perfectly reversible by heating. A model based on the interaction between the electric field and the electric dipolar moment of spin crossover complexes, grasps the main features of the experimental data.

Domaines: Chimie de coordination

Constantin Lefter, Reasmey Phary Tan, Julien Dugay, Simon Tricard, Gábor Molnár, et al.. Unidirectional electric field-induced spin-state switching in spin crossover based microelectronic devices. Chemical Physics Letters, 2016, 644, pp.138-141. ⟨10.1016/j.cplett.2015.11.036⟩. ⟨hal-01934979⟩