“School of Physics”
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| Paper IPM / P / 13900 |
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| Abstract: | |||||||
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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.
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