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Machine learning of quantum phase transitions
A method is proposed that compresses $d+1$ dimensional space-time configurations to a manageable size and then use them as the input for a CNN, which shows that both continuous and discontinuous quantum phase transitions can be well detected and characterized.
Time-reversal-breaking topological phases in antiferromagnetic Sr2FeOsO6 films
In this work, we studied time-reversal-breaking topological phases as a result of the interplay between antiferromagnetism and inverted band structures in antiferromagnetic double perovskite…
Classification of topological crystalline insulators based on representation theory
Topological crystalline insulators define a new class of topological insulator phases with gapless surface states protected by crystalline symmetries. In this work, we present a general theory to…
Topological magnons in Kitaev magnets at high fields
Spin-orbit coupled honeycomb lattice magnets offer a route to novel states of matter through the presence of significant Kitaev exchange coupling. Here, the authors explored the spin-polarized…
Electrically tunable multiple Dirac cones in thin films of the (LaO)2(SbSe2)2 family of materials.
A new Dirac system with eight Dirac cones in thin films of the (LaO)2(SbSe2)2 family of materials is proposed, which has the advantage in its tunability: the existence of gapless Dirac cone, their positions, Fermi velocities and anisotropy all can be controlled by an experimentally feasible electric field.
Predicting the ground-state structure of sodium boride
Xin-Ling He,1 Xiao Dong,1 QuanSheng Wu,2 Zhisheng Zhao,3 Qiang Zhu,4 Artem R. Oganov,5,6,7 Yongjun Tian,3 Dongli Yu,3 Xiang-Feng Zhou,1,* and Hui-Tian Wang1,8 1Key Laboratory of Weak-Light Nonlinear…
Charge Excitation Dynamics in Bosonic Fractional Chern Insulators.
- Xiao-yu Dong, A. Grushin, Johannes Motruk, F. Pollmann
- PhysicsPhysical review letters
- 10 October 2017
This model contrasts the behavior of single particle models with counterpropagating edge states, such as the noninteracting Harper-Hofstadter model, where the chirality is manifest only for weak perturbations.
Fractionalized Fermionic Quantum Criticality in Spin-Orbital Mott Insulators.
- Urban F. P. Seifert, Xiao-yu Dong, Sreejith Chulliparambil, M. Vojta, Hong-Hao Tu, L. Janssen
- PhysicsPhysical review letters
- 10 September 2020
Transitions between topological phases featuring emergent fractionalized excitations in two-dimensional models for Mott insulators with spin and orbital degrees of freedom are studied, reflecting the nontrivial topology of the adjacent phases.
Spin-1 Kitaev-Heisenberg model on a honeycomb lattice
We study the Kitaev-Heisenberg model with spin-1 local degree of freedom on a two-dimensional honeycomb lattice numerically by density matrix renormalization group method. By tuning the relative…
Robust and ultrafast state preparation by ramping artificial gauge potentials
The implementation of static artificial magnetic fields in ultracold atomic systems has become a powerful tool, e.g. for simulating quantum-Hall physics with charge-neutral atoms. Taking an…