Abstract
We report the manipulation of nitrogen vacancy (NV) spins in diamond when a nearby ferrimagnetic insulator, yttrium iron garnet, is driven into precession. The change in NV spin polarization, as measured by changes in photoluminescence, is comparable in magnitude to that from conventional optically detected magnetic resonance, but relies on a distinct mechanism as it occurs at a microwave frequency far away from the magnetic resonance frequency of the NV spin. This observation presents an approach to transferring ferromagnetic spin information into a paramagnet and then transducing the response into a robust optical signal. It also opens strategies for studying ferromagnetism and spin transport at the nanoscale.
- Received 28 February 2014
- Revised 7 April 2014
DOI:https://doi.org/10.1103/PhysRevB.89.180406
©2014 American Physical Society
Synopsis
Spins Move between Insulators
Published 14 May 2014
Experiments demonstrate a surprising transfer of electron spin to luminescent defects in diamond from a nearby magnet, even though the materials have no mobile electrons to carry the spin.
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