English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Slave boson calculations have been carried out in the three-band tJ model forthe high-T_c cuprates, with the inclusion of coupling to oxygen breathing modephonons. Phonon-induced Van Hove nesting leads to a phase separation between ahole-doped domain and a (magnetic) domain near half filling, with long-rangeCoulomb forces limiting the separation to a nanoscopic scale. Strongcorrelation effects pin the Fermi level close to, but not precisely at the VanHove singularity (VHS), which can enhance the tendency to phase separation. Theresulting dispersions have been calculated, both in the uniform phases and inthe phase separated regime. In the latter case, distinctly differentdispersions are found for large, random domains and for regular (static)striped arrays, and a hypothetical form is presented for dynamic stripedarrays. The doping dependence of the latter is found to provide an excellentdescription of photoemission and thermodynamic experiments on pseudogapformation in underdoped cuprates. In particular, the multiplicity of observedgaps is explained as a combination of flux phase plus charge density wave (CDW)gaps along with a superconducting gap. The largest gap is associated with VHSnesting. The apparent smooth evolution of this gap with doping masks acrossover from CDW-like effects near optimal doping to magnetic effects (fluxphase) near half filling. A crossover from large Fermi surface to hole pocketswith increased underdoping is found. In the weakly overdoped regime, the CDWundergoes a quantum phase transition ($T_{CDW}\to 0$), which could be obscuredby phase separation.Comment: 15 pages, Latex, 18 PS figures Corrects a sign error: major changes,  esp. in Sect. 3, Figs 1-4,6 replace

physical review. b, condensed matter

Stripes, pseudogaps, and Van Hove nesting in the three-band<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>t</mml:mi></mml:math>-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi></mml:math>model

Stripes, pseudogaps, and Van Hove nesting in the three-bandt-Jmodel