Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters

Details Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters

2009-03-14

arxiv.org/abs/0903.2586v1

Physics Letters A 373 (2009) 1074-1082

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1016/j.physleta.2009.01.006

Exact calculations of collective excitations and charge/spin (pseudo)gaps in an ensemble of bipartite and nonbipartite clusters yield level crossing degeneracies, spin-charge separation, condensation and recombination of electron charge and spin, driven by interaction strength, inter-site couplings and temperature. Near crossing degeneracies, the electron configurations of the lowest energies control the physics of electronic pairing, phase separation and magnetic transitions. Rigorous conditions are found for the smooth and dramatic phase transitions with competing stable and unstable inhomogeneities. Condensation of electron charge and spin degrees at various temperatures offers a new mechanism of pairing and a possible route to superconductivity in inhomogeneous systems, different from the BCS scenario. Small bipartite and frustrated clusters exhibit charge and spin inhomogeneities in many respects typical for nano and heterostructured materials. The calculated phase diagrams in various geometries may be linked to atomic scale experiments in high T$_c$ cuprates, manganites and other concentrated transition metal oxides.

Affiliated with

Also associated with

No associations

Rating

Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron coherent and incoherent pairing instabilities in inhomogeneous bipartite and nonbipartite nanoclusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-165646