171 citations · 284 across the 15 of their papers we have counts for
12 papers · 1 filter
Extended symmetric quantum phase in a honeycomb Heisenberg model with sublattice-selective interactions
Nai Chao Hu, Xing-Yu Zhang, Yuchi He +1
Motivated by two-dimensional bilayer systems we numerically study an anti-ferromagnetic spin- Heisenberg model on the honeycomb lattice with a nearest-neighbour exchange coupl…
Lowering the temperature of two-dimensional fermionic tensor networks with cluster expansions
Sander De Meyer, Atsushi Ueda, Yuchi He +2
Representing the time-evolution operator as a tensor network constitutes a key ingredient in several algorithms for studying quantum lattice systems at finite temperature or in a n…
Topological and Trivial Valence-Bond Orders in Higher-Spin Kitaev Models
Xing-Yu Zhang, Qi Yang, Philippe Corboz +2
We investigate the quantum phases of higher-spin Kitaev models using tensor network methods. Our results reveal distinct bond-ordered phases for spin-1, spin-, and sp…
Fractional Chern Insulators and Competing States in a Twisted MoTe Lattice Model
Yuchi He, S. H. Simon, S. A. Parameswaran
We construct an interacting lattice model for twisted bilayers at a twist angle of approximately 3.7\degree. We use the infinite density matrix renormalization…
Kinetic Energy Driven Ferromagnetic Insulator
Jinyuan Ye, Yuchi He, Congjun Wu
We construct a minimal model of interacting fermions establishing a ferromagnetic insulating phase. It is based on the Hubbard model on a trimerized triangular lattice in the regim…
Itinerant magnetism in the triangular lattice Hubbard model at half-doping: Application to twisted transition-metal dichalcogenides
Yuchi He, Roman Rausch, Matthias Peschke +4
We use unrestricted Hartree-Fock, density matrix renormalization group, and variational projected entangled pair state calculations to investigate the ground state phase diagram of…
Fractional Chern Insulator in Twisted Bilayer MoTe
Chong Wang, Xiao-Wei Zhang, Xiaoyu Liu +5
A recent experiment has reported the first observation of a zero-field fractional Chern insulator (FCI) phase in twisted bilayer MoTe moiré superlattices [Nature 622, 63-68 (20…
Terminable Transitions in a Topological Fermionic Ladder
Yuchi He, Dante M. Kennes, Christoph Karrasch +1
Interacting fermionic ladders are important platforms to study quantum phases of matter, such as different types of Mott insulators. In particular, the D-Mott and S-Mott states hol…
Conductance of correlated many-fermion systems from charge fluctuations
Yuchi He, Dante M. Kennes, Volker Meden
We put forward a relation between the static charge fluctuations and the conductance of correlated many-fermion systems at zero temperature, avoiding the use of time-dependent fluc…
TMDs as a platform for spin liquid physics: A strong coupling study of twisted bilayer WSe
Dominik Kiese, Yuchi He, Ciarán Hickey +2
The advent of twisted moiré heterostructures as a playground for strongly correlated electron physics has led to a plethora of experimental and theoretical efforts seeking to unrav…
Charge density waves and their transitions in anisotropic quantum Hall systems
Yuchi He, Kang Yang, Mark Oliver Goerbig +1
In recent experiments, external anisotropy has been a useful tool to tune different phases and study their competitions. In this paper, we look at the quantum Hall charge density w…
Emergent mode and bound states in single-component one-dimensional lattice fermionic systems
Yuchi He, Binbin Tian, David Pekker +1
We study the formation of bound states in a one-dimensional, single-component Fermi chain with attractive interactions. The phase diagram, computed from DMRG (density matrix renorm…