Charge and Spin Pairing Instabilities in Hubbard Nanoclusters

Abstract:

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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 et al., "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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Price:

$35.00

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