Stripe orders driven by long-range Coulomb forces in the 2D-Hubbard model View Full Text


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Article Info

DATE

2001-04

AUTHORS

R. Citro, M. Marinaro

ABSTRACT

Within the single band 2D-Hubbard model treated by means of a strong-coupling approach based on a cumulant expansion and a nonstandard diagrammatic technique, we discuss the existence of critical charge fluctuations that could give rise to an instability towards a phase separation (PS). It turns out that such instability exists and evolves into an incommensurate charge density wave (ICDW) when long-range Coulomb forces are taken into account. We find a stripe phase with a crossover from diagonal to vertical stripes at increasing doping in the range 0.01 ?δ? 0.2 and increasing Coulomb potential U, similarly to recent NMR experiments on La2 - xSrxCuO4. More... »

PAGES

343-348

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/pl00011102

DOI

http://dx.doi.org/10.1007/pl00011102

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1011472366


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