Paper Title:
Charge and Spin Pairing Instabilities in Hubbard Nanoclusters
  Abstract

Electron coherent and incoherent pairings and other types of correlations are studied exactly for the ensemble of small clusters with different geometries under variation of interaction strength, electron doping and temperature. Charge and spin collective excitations yield intriguing insights into level crossing degeneracies, phase separation and condensation. Criteria for spin-charge separation and recombination driven by interaction strength and temperature are found. Phase diagrams resemble a number of inhomogeneous, nanoscale phases and pseudogap regions seen recently in high TC cuprates, manganites, multiferroics and CMR nanomaterials.

  Info
Periodical
Solid State Phenomena (Volumes 152-153)
Edited by
N. Perov
Pages
583-586
DOI
10.4028/www.scientific.net/SSP.152-153.583
Citation
A.N. Kocharian, G.W. Fernando, K. Palandage, J.W. Davenport, "Charge and Spin Pairing Instabilities in Hubbard Nanoclusters", Solid State Phenomena, Vols. 152-153, pp. 583-586, 2009
Online since
April 2009
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