Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-12-17
Physics
Condensed Matter
Strongly Correlated Electrons
8 pages, 3 figures, Proceedings of 7th ISSP International Symposium "Frontiers in Neutron Scattering Research" (To appear in J
Scientific paper
10.1016/S0022-3697(99)00038-4
Various aspects of close and interesting relationship between antiferromagnetism and singlet ground states are introduced for which neutron scattering have been playing vital roles. The special emphasis is on the disorder-induced antiferromagnetism in spin-Peierls systems, which can be viewed as a nucleation process of classical magnetic order in the background of singlet state whose origin is purely quantum-mechanical. It is then pointed out that similar features will be found in Ce_xCu_2Si_2 and high T_c cuprates. Finally the possible charge ordering process in NaV_2O_5 is discussed which leads to the quenching of localized spins.
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