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

Since the discovery of half-filled cuprate to be a Mott insulator, theexcitation spectra above the chemical potential for the unoccupied states hasattracted many research attentions. There were many theoretical works usingdifferent numerical techniques to study this problem, but many have reacheddifferent conclusions. One of the reasons is the lack of very detailedhigh-resolution experimental results for the theories to be compared with.Recently, the scanning tunneling spectroscopy(STS)\cite{cai2015visualizing,ye2013visualizing} on lightly doped Mottinsulator with an antiferromagnetic (AFM) order found the presence of in-gapstates with energy of order half an eV above the chemical potential. Themeasured spectral properties with doping are not quite consistent with earliertheoretical works. In this paper we perform a diagonalization method on top ofthe variational Monte Carlo (VMC) calculation to study the evolution of AFMMott state with doped hole concentration in the Hubbard model (HM). Our resultsfound in-gap states that behave similarly with ones reported by STS. Thesein-gap states acquire a substantial amount of dynamical spectral weighttransferred from the upper Hubbard band. The in-gap states move toward chemicalpotential with increasing spectral weight as doping increases. Our result alsoprovides information about the energy scale of these in-gap states in relationwith the coulomb coupling strength U.

Spectral evolution with doping of an antiferromagnetic Mott state