4 papers
Revealing Fermionic Quantum Criticality from New Monte Carlo Techniques
Xiao Yan Xu, Zi Hong Liu, Gaopei Pan +3
This review summarizes recent developments in the study of fermionic quantum criticality, focusing on new progress in numerical methodologies, especially quantum Monte Carlo method…
Pair Density Wave in the Doped - Model with Ring Exchange on a Triangular Lattice
Xiao Yan Xu, K. T. Law, Patrick A. Lee
In our previous work [arXiv:1803.00999, Phys. Rev. Lett. 121, 046401 (2018)], we found a quantum spin liquid phase with a spinon Fermi surface in the two dimensional spin-1/2 Heise…
Itinerant Quantum Critical Point with Fermion Pockets and Hot Spots
Zi Hong Liu, Gaopei Pan, Xiao Yan Xu +2
Metallic quantum criticality is among the central theme in the understanding of correlated electronic systems, and converging results between analytical and numerical approaches ar…
Spinon Fermi surface in a cluster Mott insulator model on a triangular lattice and possible application to 1T-TaS
Wen-Yu He, Xiao Yan Xu, Gang Chen +2
1T-TaS is a cluster Mott insulator on the triangular lattice with 13 Ta atoms forming a star of David cluster as the unit cell. We derive a two dimensional XXZ spin-1/2 model w…