Please use this identifier to cite or link to this item:
|Title:||Quantum Oscillations of the Total Spin in Heterometallic AF Rings - Evidence from Neutron Spectroscopy|
|Authors:||CARRETTA S.; SANTINI P.; AMORETTI G.; GUIDI T.; COPLEY J.r.d.; QUI Y.; CACIUFFO ROBERTO; TIMCO G.; WINPENNY R.e.p.|
|Citation:||PHYSICAL REVIEW LETTERS vol. 98 no. 16 p. 167401|
|Publisher:||AMERICAN PHYSICAL SOC|
|Type:||Articles in periodicals and books|
|Abstract:||Using inelastic neutron scattering and applied fields up to 11.4 T, we have studied the spin dynamics of the Cr7Ni antiferromagnetic ring in the energy window 0.05 - 1.6 meV. We demonstrate that the external magnetic field induces an avoided crossing (anticrossing) between energy levels with different total-spin quantum numbers. This corresponds to quantum oscillations of the total spin of each molecule. The inelastic character of the observed excitation and the field dependence of its linewidth indicate that molecular spins oscillate coherently for a significant number of cycles. Precise signatures of the anticrossing are also found at higher energy, where measured and calculated spectra match very well.|
|JRC Institute:||Nuclear Safety and Security|
Files in This Item:
There are no files associated with this item.
Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.