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## “School of Physic”

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Paper   IPM / Physic / 13900
School of Physics
Title:   Spin nutation effects in molecular nanomagnetâsuperconductor tunnel junctions
Author(s):
 1 J . Abouie 2 B . Abdollahipour 3 A A. Rostami
Status:   Published
Journal: J. Physics: Condens. Matter
Vol.:  25
Year:  2013
Pages:   465701
Supported by:  IPM
Abstract:
We study the spin nutation effects of a molecular nanomagnet on the Josephson current through a superconductor j molecular nanomagnet j superconductor tunnel junction. We explicitly demonstrate that, due to the spin nutation of the molecular nanomagnet, two oscillatory terms emerge in the ac Josephson current in addition to the conventional ac Josephson current. Some resonances occur in the junction due to the interactions of the transported quasiparticles with the bias voltage and molecular nanomagnet spin dynamics. Their appearance indicates that the energy exchanged during these interactions is in the range of the superconducting energy gap. We also show that the spin nutation is able to convert the ac Josephson current to a dc current, which is interesting for applications.