Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: K1.00167 : Quntum beat generated by an acoustic wave in single-molecule magnets
Author:
The Spin oscillation is studied for the case where a standing
acoustic wave is delivered
to two level states in single-molecule magnets. In order to
obtain such states,
we first saturate the sample in strong negative magnetic field
and increase the field until
it reaches zero. Maintaining zero field, we begin to apply the
standing acousitc wave to the sample and see
the change of the magnetization between the ground state and
the excited state. Taking
$\langle S_z \rangle$ averaged over the wavelength of the sound
where
$\langle S_z \rangle$ is the expectation value of the
projection of the spin onto the easy
anisotropy axis, we present the analytic form of $\langle S_z
\rangle$ at $\hbar \omega=\Delta$
where $\omega$ is the frequency of sound and $\Delta$ the
energy
gap between two states. In addition,
we find the optimal condition for quatnum beat strucuture and
discuss the possibility of the future experiment.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.K1.167
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