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

Recently, a quantum anomalous Hall (QAH) state was observed in AB stackedmoir\'e MoTe$_2$/WSe$_2$ heterobilayers at half-filling. More recentlayer-resolved magnetic circular dichroism (MCD) measurements revealed thatspin-polarized moir\'e bands from both the MoTe$_2$ and the WSe$_2$ layers areinvolved at the formation of the QAH state. This scenario is not expected byexisting theories. In this work, we suggest that the observed QAH state is anew state of matter, namely, a topological $p_x+ip_y$ inter-valley coherentstate (TIVC). We point out that the massive Dirac spectrum of the MoTe$_2$moir\'e bands, together with the Hund's interaction and the Coulombinteractions give rise to this novel QAH state. Through a self-consistentHartree-Fock analysis, we find a wide range of interaction strengths anddisplacement fields that the $p_x+ip_y$-pairing phase is energeticallyfavourable. Besides explaining several key features of the experiments, ourtheory predicts that the order parameter would involve the pairing of electronsand holes with a definite momentum mismatch such that the pairing wouldgenerate a new unit cell which is three times the size of the original moir\'eunit cell, due to the order parameter modulations.

Topological $p_x+ip_y$ inter-valley coherent state in Moir\'e MoTe$_2$/WSe$_2$ heterobilayers