171 citations · 284 across the 15 of their papers we have counts for
15 papers
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…
Gate-tunable antiferromagnetic Chern insulator in twisted bilayer transition metal dichalcogenides
Xiaoyu Liu, Chong Wang, Xiao-Wei Zhang +2
A series of recent experimental works on twisted MoTe homobilayers have unveiled an abundance of exotic states in this system. Valley-polarized quantum anomalous Hall states ha…
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…
Superconductivity of repulsive spinless fermions with sublattice potentials
Yuchi He, Kang Yang, Jonas B. Profe +2
We explore unconventional superconductivity of repulsive spinless fermions on square and honeycomb lattices with staggered sublattice potentials. The two lattices can exhibit stagg…
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…
Entanglement of heterogeneous free fermion chains
Yuchi He
We calculate the ground state entanglement entropy between two heterogeneous parts of a free fermion chain. The two parts could be XX chains with different parameters or an XX half…