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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The physical nature of doped Mott-insulator has been intensively studied formore than three decades. It is well known that the single band Hubbard model or$t$-$J$ model on the bipartite lattice is the simplest model to describe adoped Mott insulator. Unfortunately, the key mechanism of superconductivity inthese toy models is still under debate. In this paper, we propose a newmechanism for the $d+id$-wave superconductivity (SC) that occurs in thesmall-doping region of the honeycomb lattice $t$-$J$ model based on theGrassmann tensor product state numerical simulation and spin-charge separationformulation. Moreover, in the presence of anti-ferromagnetic order, a continuumeffective field theory for holons is developed near half-filling. It revealsthe competition between repulsive and attractive holon interactions induced byspinon fluctuations and gauge fluctuations, respectively. At a large value of$t/J$, the repulsive interaction dominates, leading to the non-Fermi liquidlike behavior; while in a moderate range of $t/J$, the attractive interactiondominates, leading to the SC order. Possible experimental detection ofspin-charge separation phenomena is also discussed.

Spin-charge separation and unconventional superconductivity in \textit{t}-\textit{J} model on honeycomb lattice