Vibrational detection and control of spin in mixed-valence molecular transistors

Abstract

We investigate electron transport through a mixed-valence molecular complex in which an excess electron can tunnel between hetero-valent transition metal ions, each having a fixed localized spin. We show that in this class of molecules the interplay of the spins and the vibrational breathing modes of the ionic ligand-shells allows the total molecular spin to be detected as well as controlled by nonequilibrium transport. Due to a spin-dependent pseudo Jahn-Teller effect electronic transitions with different spin values can be distinguished by their vibronic conductance side peaks, without using an external magnetic field. Conversely, we show that the spin state of the entire molecule can also be controlled via the nonequilibrium quantized molecular vibrations due to a vibration-induced spin-blockade.

6 pages, 3 figures

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Cited by in corpus (8)

• Density-operator approaches to transport through interacting quantum dots: Simplifications in fourth-order perturbation theory
• Charge transport through single molecules, quantum dots, and quantum wires
• Transport mirages in single-molecule devices
• Interaction-induced negative differential resistance in asymmetric molecular junctions
• Memristive properties of single-molecule magnets
• Dzyaloshinskii-Moriya interaction in transport through single molecule transistors
• Electronic spin working mechanically
• The single-electron transport in a three-ion magnetic molecule modulated by a transverse field