5 papers
Topological Edge and Interface states at Bulk disorder-to-order Quantum Critical Points
Yichen Xu, Xiao-Chuan Wu, Chao-Ming Jian +1
We study the interplay between two nontrivial boundary effects: (1) the two dimensional () edge states of three dimensional () strongly interacting bosonic symmetry protect…
Boundary Criticality of Topological Quantum Phase Transitions in systems
Xiao-Chuan Wu, Yichen Xu, Hao Geng +2
We discuss the boundary critical behaviors of two dimensional quantum phase transitions with fractionalized degrees of freedom in the bulk, motivated by the fact that usually it is…
Non-Landau Quantum Phase Transitions and nearly-Marginal non-Fermi Liquid
Yichen Xu, Hao Geng, Xiao-Chuan Wu +2
Non-fermi liquid and unconventional quantum critical points (QCP) with strong fractionalization are two exceptional phenomena beyond the classic condensed matter doctrines, both of…
Orbital Orders and non-Fermi Liquid in Moiré systems
Yichen Xu, Xiao-Chuan Wu, Chao-Ming Jian +1
Motivated by recent observation of nematicity in Moiré systems, we study three different orbital orders that potentially can happen in Moiré systems: (1) the nematic order; (2) the…
Interacting Valley Chern Insulator and its Topological Imprint on Moiré Superconductors
Xiao-Chuan Wu, Yichen Xu, Chao-Ming Jian +1
One salient feature of systems with Moiré superlattice is that, Chern number of "minibands" originating from each valley of the original graphene Brillouin zone becomes a well-defi…