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Coulomb-promoted spintromechanics in magnetic shuttle devices

Journal article
Authors O. A. Ilinskaya
D. Radic
H. C. Park
I. V. Krive
Robert I. Shekhter
M. Jonson
Published in Physical Review B
Volume 100
Issue 4
ISSN 2469-9950
Publication year 2019
Published at Department of Physics (GU)
Language en
Links dx.doi.org/10.1103/PhysRevB.100.045...
Keywords Materials Science, Physics
Subject categories Physical Sciences

Abstract

Exchange forces on the movable dot ("shuttle") in a magnetic shuttle device depend on the parity of the number of shuttling electrons. The performance of such a device can therefore be tuned by changing the strength U of Coulomb correlations to block or unblock parity fluctuations. We show that by increasing U the spintromechanics of the device crosses over, at U = U-c(T), from a mechanically stable regime to a regime of spin-induced shuttle instabilities (neglecting electric forces). This is due to enhanced spin-dependent mechanical forces as parity fluctuations are reduced by a Coulomb blockade of tunneling and demonstrates that single-electron manipulation of single-spin controlled nanomechanics is possible.

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