277 citations · 1.1k across the 24 of their papers we have counts for
25 papers
Complex magnetic and spatial symmetry breaking from correlations in kagome flat bands
Yu-Ping Lin, Chunxiao Liu, Joel E. Moore
We present the mean-field phase diagram of electrons in a kagome flat band with repulsive interactions. In addition to flat-band ferromagnetism, the Hartree-Fock analysis yields ca…
Magnetization amplification in the interlayer pairing superconductor 4Hb-TaS
Chunxiao Liu, Shubhayu Chatterjee, Thomas Scaffidi +2
A recent experiment on the bulk compound 4Hb-TaS reveals an unusual time-reversal symmetry-breaking superconducting state that possesses a magnetic memory not manifest in the n…
Realization of two-sublattice exchange physics in the triangular lattice compound Ba3Er(BO3)3
Matthew Ennis, Rabindranath Bag, Chunxiao Liu +4
We have synthesized high-quality single crystal samples of the erbium-based triangular lattice compound Ba3Er(BO3)3. Thermal and magnetic measurements reveal large anisotropy and a…
Quantum spin liquids on the diamond lattice
Aishwarya Chauhan, Atanu Maity, Chunxiao Liu +3
We perform a projective symmetry group classification of spin symmetric quantum spin liquids with different gauge groups on the diamond lattice. Employing the Abrikosov fer…
Theory of topological defects and textures in two-dimensional quantum orders with spontaneous symmetry breaking
Yan-Qi Wang, Chunxiao Liu, Yuan-Ming Lu
We consider two-dimensional (2d) quantum many-body systems with long-range orders, where the only gapless excitations in the spectrum are Goldstone modes of spontaneously broken co…
Structure of domain walls in chiral spin liquids
Yan-Qi Wang, Chunxiao Liu, Joel E. Moore
The chiral spin liquid is one of the canonical examples of a topological state of quantum spins coexisting with symmetry-breaking chiral order; its experimental realization has bee…
Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3
Rabindranath Bag, Matthew Ennis, Chunxiao Liu +5
We investigate the thermodynamic properties of the ytterbium-based triangular lattice compound Ba3Yb(BO3)3. The results demonstrate the absence of any long-range ordering down to 5…
Quantum error as an emergent magnetic field
Shao-Kai Jian, Chunxiao Liu, Xiao Chen +2
We investigate the effect of quantum errors on a monitored Brownian Sachdev-Ye-Kitaev (SYK) model featuring a measurement-induced phase transition that can be understood as a symme…
Symmetric and spin liquids on the pyrochlore lattice
Chunxiao Liu, Gábor B. Halász, Leon Balents
The geometrically frustrated 3D pyrochlore lattice has been long predicted to host a quantum spin liquid, an intrinsic long-range entangled state with fractionalized excitations. T…
Universal Entanglement Transitions of Free Fermions with Long-range Non-unitary Dynamics
Pengfei Zhang, Chunxiao Liu, Shao-Kai Jian +1
Non-unitary evolution can give rise to novel steady states classified by their entanglement properties. In this work, we aim to understand its interplay with long-range hopping tha…
Emergent Replica Conformal Symmetry in Non-Hermitian SYK Chains
Pengfei Zhang, Shao-Kai Jian, Chunxiao Liu +1
Recently, the steady states of non-unitary free fermion dynamics are found to exhibit novel critical phases with power-law squared correlations and a logarithmic subsystem entangle…
Frustrated Heisenberg model within the stretched diamond lattice of LiYbO2
Mitchell M. Bordelon, Chunxiao Liu, Lorenzo Posthuma +7
We investigate the magnetic properties of LiYbO, containing a three-dimensionally frustrated, diamond-like lattice via neutron scattering, magnetization, and heat capacity meas…
Non-unitary dynamics of Sachdev-Ye-Kitaev chain
Chunxiao Liu, Pengfei Zhang, Xiao Chen
We construct a series of one-dimensional non-unitary dynamics consisting of both unitary and imaginary evolutions based on the Sachdev-Ye-Kitaev model. Starting from a short-range…
Spin excitations in the frustrated triangular lattice antiferromagnet NaYbO
Mitchell Bordelon, Chunxiao Liu, Lorenzo Posthuma +6
Here we present a neutron scattering-based study of magnetic excitations and magnetic order in NaYbO under the application of an external magnetic field. The crystal electric f…
Subsystem Rényi Entropy of Thermal Ensembles for SYK-like models
Pengfei Zhang, Chunxiao Liu, Xiao Chen
The Sachdev-Ye-Kitaev model is an -modes fermionic model with infinite range random interactions. In this work, we study the thermal Rényi entropy for a subsystem of the SYK mod…
Competing orders in pyrochlore magnets from a spin liquid perspective
Chunxiao Liu, Gábor B. Halász, Leon Balents
The pyrochlore materials have long been predicted to harbor a quantum spin liquid, an intrinsic long-range-entangled state supporting fractionalized excitations. Existing pyrochlor…
Topological thermal Hall effect of "magnetic monopoles" in pyrochlore U(1) spin liquid
Xiao-Tian Zhang, Yong Hao Gao, Chunxiao Liu +1
"Magnetic monopole" is an exotic quantum excitation in pyrochlore U(1) spin liquid, and its emergence is purely of quantum origin and has no classical analogue. We predict topologi…
Landau levels in twisted bilayer graphene and semiclassical orbits
Kasra Hejazi, Chunxiao Liu, Leon Balents
Twisted bilayer graphene has been argued theoretically to host exceptionally flat bands when the angle between the two layers falls within a magic range near 1.1. This is n…
Field-tunable quantum disordered ground state in the triangular lattice antiferromagnet NaYbO
Mitchell Bordelon, Eric Kenney, Tom Hogan +8
Antiferromagnetically coupled S=1/2 spins on an isotropic triangular lattice is the paradigm of frustrated quantum magnetism, but structurally ideal realizations are rare. Here we…
Multiple topological transitions in twisted bilayer graphene near the first magic angle
Kasra Hejazi, Chunxiao Liu, Hassan Shapourian +2
Recent experiments have observed strongly correlated physics in twisted bilayer graphene (TBG) at very small angles, along with nearly flat electron bands at certain fillings. A go…
Spin-flip reflection at the normal metal-spin superconductor interface
Peng Lv, Ai-Min Guo, Huaiyu Li +3
We study spin transport through a normal metal-spin superconductor junction. A spin-flip reflection is demonstrated at the interface, where a spin-up electron incident from the nor…
Quantum Entanglement of the Sachdev-Ye-Kitaev Models
Chunxiao Liu, Xiao Chen, Leon Balents
The Sachdev-Ye-Kitaev (SYK) model is a quantum mechanical model of fermions interacting with -body random couplings. For , it describes free particles, and is non-chaotic i…
Spin Liquid versus Spin Orbit Coupling on the Triangular Lattice
Jason Iaconis, Chunxiao Liu, Gábor B. Halász +1
In this paper, we explore the relationship between strong spin-orbit coupling and spin liquid physics. We study a very general model on the triangular lattice where spin-orbit coup…
Symmetry Protected Topological Hopf Insulator and its Generalizations
Chunxiao Liu, Farzan Vafa, Cenke Xu
We study a class of and topological insulators whose topological nature is characterized by the Hopf map and its generalizations. We identify the symmetry $\mathcal{C}^\p…