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Title: Large conductance switching in a single-molecule device through room temperature spin-dependent transport
Author: Aragones, Albert C.
Aravena, Daniel
Cerda, Jorge I.
Acis-Castillo, Zulema
Li, Haipeng
Antonio Real, Jose
Sanz Carrasco, Fausto
Hihath, Josh
Ruiz Sabín, Eliseo
Díez Pérez, Ismael
Keywords: Ferro
Teoria del funcional de densitat
Density functionals
Issue Date: 1-Jan-2016
Publisher: American Chemical Society
Abstract: Controlling the spin of electrons in nanoscale electronic devices is one of the most promising topics aiming at developing devices with rapid and high density information storage capabilities. The interface magnetism or spinterface resulting from the interaction between a magnetic molecule and a metal surface, or vice versa, has become a key ingredient in creating nanoscale molecular devices with novel functionalities. Here, we present a single-molecule wire that displays large (>10000%) conductance switching by controlling the spin-dependent transport under ambient conditions (room temperature in a liquid cell). The molecular wire is built by trapping individual spin crossover Fe-II complexes between one Au electrode and one ferromagnetic Ni electrode in an organic liquid medium. Large changes in the single-molecule conductance (>100-fold) are measured when the electrons flow from the Au electrode to either an alpha-up or a beta-down spin-polarized Ni electrode. Our calculations show that the current flowing through such an interface appears to be strongly spin-polarized, thus resulting in the observed switching of the single-molecule wire conductance. The observation of such a high spin-dependent conductance switching in a single-molecule wire opens up a new door for the design and control of spin-polarized transport in nanoscale molecular devices at room temperature.
Note: Versió postprint del document publicat a:
It is part of: Nano Letters, 2016, vol. 16, num. 1, p. 218-226
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ISSN: 1530-6984
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)
Articles publicats en revistes (Ciència dels Materials i Química Física)

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