Voltage induced switching dynamics of a coupled spin pair in a molecular junction
arXiv:1603.07652 · doi:10.1021/acs.nanolett.6b00628
Abstract
Molecular spintronics is made possible by the coupling between electronic configuration and magnetic po- larization of the molecules. For control and application of the individual molecular states it is necessary to both read and write their spin states. Conventionally, this is achieved by means of external magnetic fields or ferromagnetic contacts, which may change the intentional spin state and may present additional challenges when downsizing devices. Here, we predict that coupling magnetic molecules together opens up possibilities for all electrical control of both the molecular spin states as well as the current flow through the system. Tuning between the regimes of ferromagnetic and anti-ferromagnetic exchange interaction, the current can be, at least, an order of magnitude enhanced or reduced. The effect is susceptible to the tunnel coupling and molecular level alignment which can be used to achieve current rectification.
arXiv comment6 pages, 3 figures, and Supporting Information included - one page and one figure. Accepted in Nano Letters
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- Spin-dependent heat signatures of single-molecule spin dynamics
- Charge Transport and Entropy Production Rate in Magnetically Active Molecular Dimer
- Dynamical exchange and phase induced switching of a localized molecular spin
- Synthesizing and Controlling Helical Indirect Exchange Interactions at Nonequilibrium
- Electronically Mediated Magnetic Anisotropy in Vibrating Magnetic Molecules
- Effect of uniaxial magnetic anisotropy on charge transport in a junction with a precessing anisotropic molecular spin
- Aharonov Bohm Effect in Voltage Dependent Molecular Spin Dimer Switch