Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-05-13
Physics
Condensed Matter
Strongly Correlated Electrons
This paper has been withdrawn by the authors. It is replaced by arXiv:1004.2220
Scientific paper
In a recent study of the magnetic properties of rare-earth systems the two extreme situations have been considered in which the crystalline electrostatic field is large or small with respect to the spin-orbit interaction. In the first case the orbitals of localized electrons are firmly coupled to the lattice so that while an applied magnetic field rotates the spin, the charge profile remains fixed to the lattice. In the second case an applied magnetic field rotates both spin and density profile, even though through a very small angle. We show that in this second case we have, in addition to the use of photons or electrons, the possibility of exciting and observing the Scissors Mode in crystals in a way analogous to that used in Bose-Einstein Condensates.
Hatada Keisuke
Hayakawa Kuniko
Palumbo Fabrizio
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