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

A one-dimensional model of interacting electrons with on-site $U$,nearest-neighbor $V$, and pair-hopping interaction $W$ is studied athalf-filling using the continuum limit field theory approach. The ground statephase diagram is obtained for a wide range of coupling constants. In additionto the insulating spin- and charge-density wave phases for large $U$ and $V$,respectively, we identify bond-located ordered phases corresponding to anenhanced Peierls instability in the system for $W<0$, $|U-2V|<|2W|$, and to astaggered magnetization located on bonds between sites for $W>0$, $|U-2V|<W$.The general ground state phase diagram including insulating, metallic, andsuperconducting phases is discussed. A transition to the$\eta_{\pi}$-superconducting phase at $|U-2V| \ll 2t \leq W$ is brieflydiscussed.Comment: 6 pages in revtex format, 2 fig files in ep

Phase diagram of the extended hubbard model with pair hopping interaction