Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Dong, Zhihuan"'
Autor:
Dong, Zhihuan
A new class of 2d materials, moiré superlattices, has emerged and become one of the most exciting playgrounds for the study of many-body physics. These systems, thanks to their unprecedented tunability, have exhibited a plethora of interesting pheno
Externí odkaz:
https://hdl.handle.net/1721.1/156642
Recent experiments on multilayer rhombohedral graphene have unearthed a number of interesting phenomena in the regime where Integer and Fractional Quantum Anomalous Hall phenomena were previously reported. Specifically at low temperature ($T$) and lo
Externí odkaz:
http://arxiv.org/abs/2408.11818
Recent experiments showing an integer quantum anomalous Hall effect in pentalayer rhombohedral graphene have been interpreted in terms of a valley-polarized interaction-induced Chern band. The resulting many-body state can be viewed as an Anomalous H
Externí odkaz:
http://arxiv.org/abs/2403.07873
We study a family of excitonic quantum phase transitions describing the evolution of a bilayer metallic state to an inter-layer coherent state where excitons condense. We argue that such transitions can be continuous and exhibit a non-Fermi liquid co
Externí odkaz:
http://arxiv.org/abs/2402.12436
Remarkable recent experiments on the moir\'e structure formed by pentalayer rhombohedral graphene aligned with a hexagonal Boron-Nitride substrate report the discovery of a zero field fractional quantum hall effect. These "(Fractional) Quantum Anomal
Externí odkaz:
http://arxiv.org/abs/2311.03445
Autor:
Dong, Zhihuan, Zhang, Ya-Hui
We propose a new mechanism for quantum anomalous Hall (QAH) effect in the AB stacked MoTe$_2$/WSe$_2$ system. Based on the observation that the inter-layer tunneling is suppressed in the AB stacking, we consider a model with two layers coupled throug
Externí odkaz:
http://arxiv.org/abs/2206.13567
Autor:
Dong, Zhihuan, Senthil, T.
Quantum many particle systems in which the kinetic energy, strong correlations, and band topology are all important pose an interesting and topical challenge. Here we introduce and study particularly simple models where all of these elements are pres
Externí odkaz:
http://arxiv.org/abs/2107.06911
Autor:
Dong, Zhihuan, Senthil, T.
Publikováno v:
Phys. Rev. B 102, 205126 (2020)
Composite Fermi liquid metals arise at certain special filling fractions in the quantum Hall regime and play an important role as parent states of gapped states with quantized Hall response. They have been successfully described by the Halperin-Lee-R
Externí odkaz:
http://arxiv.org/abs/2006.01282
Publikováno v:
Phys. Rev. Lett. 124, 187601 (2020)
Many graphene moir\'e superlattices host narrow bands with non-zero valley Chern numbers. We provide analytical and numerical evidence for a robust spin and/or valley polarized insulator at total integer band filling in nearly flat bands of several d
Externí odkaz:
http://arxiv.org/abs/1907.11723
Publikováno v:
Phys. Rev. B 99, 085305 (2019)
We study an interacting two-component hard-core bosons on square lattice for which, in the presence of staggered magnetic flux, the ground state is a bosonic integer quantum Hall (BIQH) state. Using a coupled-wire bosonization approach, we analytical
Externí odkaz:
http://arxiv.org/abs/1712.01212