43 citations · 103 across the 7 of their papers we have counts for
7 papers
Phase Diagram of Kane-Mele Hubbard model at small doping
Gaurav Kumar Gupta, D. N. Sheng, C. S. Ting
Recent experiment on MoTe-WTe twisted bi-layer demonstrated physics of Kane-Mele (KM) as well as Haldane models. Although topological properties of KM model has been studie…
Spin-charge separation: From one hole to finite doping
Z. Y. Weng, D. N. Sheng, C. S. Ting
In the presence of nonlocal phase shift effects, a quasiparticle can remain topologically stable even in a spin-charge separation state due to the confinement effect introduced by…
Nature of spin-charge separation
Z. Y. Weng, D. N. Sheng, C. S. Ting
Quasiparticle properties are explored in an effective theory of the model which includes two important components: spin-charge separation and unrenormalizable phase shift. We…
Theory of Ferromagnetic Metal to Paramagnetic Insulator Transition i in R_{1-x}A_{x}MnO_{3}
L. Sheng, D. N. Sheng, C. S. Ting
The double-exchange model for the Mn oxides with orbital degeneracy is studied with including on-site Coulomb repulsion, Jahn-Teller (J-T) coupling and doping-induced disorder. In…
Magnetic Incommensurability in Doped Mott Insulator
Z. Y. Weng, D. N. Sheng, C. S. Ting
In this paper we explore the incommensurate spatial modulation of spin-spin correlations as the intrinsic property of the doped Mott insulator, described by the model. We sho…
Mean-Field Description of Phase String Effect in the Model
Z. Y. Weng, D. N. Sheng, C. S. Ting
A mean-field treatment of the phase string effect in the model is presented. Such a theory is able to unite the antiferromagnetic (AF) phase at half-filling and metallic phas…