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

At strong repulsion, the triangular-lattice Hubbard model is described by$s=1/2$ spins with nearest-neighbor antiferromagnetic Heisenberg interactionsand exhibits conventional 120$^\circ$ order. Using the infinite density matrixrenormalization group and exact diagonalization, we study the effect of theadditional four-spin interactions naturally generated from the underlyingMott-insulator physics of electrons as the repulsion decreases. Although theseinteractions have historically been connected with a gapless ground state withemergent spinon Fermi surface, we find that at physically relevant parameters,they stabilize a chiral spin-liquid (CSL) of Kalmeyer-Laughlin (KL) type,clarifying observations in recent studies of the Hubbard model. We then presenta self-consistent solution based on mean-field rewriting of the interaction toobtain a Hamiltonian with similarities to the parent Hamiltonian of the KLstate, providing a physical understanding for the origin of the CSL.

Four-Spin Terms and the Origin of the Chiral Spin Liquid in Mott Insulators on the Triangular Lattice