title: Light induced modulation of charge transport phenomena across the bistability region in [Fe(Htrz)2(trz)](BF4) spin crossover micro-rods.
abstract: We studied the effect of light irradiation on the electrical conductance of micro-rods of the spin crossover [Fe(Htrz)2(trz)](BF4) network, organized between interdigitated gold electrodes. By irradiating the sample with different wavelengths (between 295 and 655 nm) either in air or under a nitrogen atmosphere we observed both a reversible and an irreversible change of the current flowing in the device. The reversible process consists of an abrupt decrease of the current intensity (ca. 10-50%) upon light irradiation, while the irreversible process is characterized by a slow, but continuous increase in time of the current, which persists also in the dark. These photo-induced processes were only detected in the high conductance low-spin (LS) state of the complex. On switching the rods to the high spin (HS) state the conductance decreases two orders of magnitude (at the same temperature) and - as a consequence - the photo-effect vanishes.
authors.affiliation: LCC, CNRS & Université de Toulouse (UPS, INP), Toulouse, France. azzedine.bousseksou@lcc-toulouse.fr.
authors.forename: Constantin
authors.initials: C
authors.lastname: Lefter
authors.forename: Reasmey
authors.initials: R
authors.lastname: Tan
authors.forename: Julien
authors.initials: J
authors.lastname: Dugay
authors.forename: Simon
authors.initials: S
authors.lastname: Tricard
authors.forename: Gábor
authors.initials: G
authors.lastname: Molnár
authors.forename: Lionel
authors.initials: L
authors.lastname: Salmon
authors.forename: Julian
authors.initials: J
authors.lastname: Carrey
authors.forename: Aurelian
authors.initials: A
authors.lastname: Rotaru
authors.forename: Azzedine
authors.initials: A
authors.lastname: Bousseksou