100 citations · 572 across the 17 of their papers we have counts for
5 papers · 1 filter
Fractional and composite excitations of antiferromagnetic quantum spin trimer chains
Jun-Qing Cheng, Jun Li, Zijian Xiong +3
Using quantum Monte Carlo, exact diagonalization and perturbation theory, we study the spectrum of the antiferromagnetic Heisenberg trimer chain by varying the ratio $g=J_2…
Exact diagonalization study of the anisotropic Heisenberg model related to YbMgGaO
Muwei Wu, Dao-Xin Yao, Han-Qing Wu
Employing exact diagonalization, we systematically study the anisotropic Heisenberg model which is related to rare-earth triangular-lattice materials. We probe its full 3D phase di…
Amplitude Mode in Quantum Magnets via Dimensional Crossover
Chengkang Zhou, Zheng Yan, Han-Qing Wu +3
We investigate the amplitude (Higgs) mode associated with longitudinal fluctuations of the order parameter at the continuous spontaneous symmetry breaking phase transition. In quan…
Correlation-induced insulating topological phases at charge neutrality in twisted bilayer graphene
Yuan Da Liao, Jian Kang, Clara N. Breiø +5
Twisted bilayer graphene (TBG) provides a unique framework to elucidate the interplay between strong correlations and topological phenomena in two-dimensional systems. The existenc…
Characterizing Random-singlet State in Two-dimensional Frustrated Quantum Magnets and Implications for the Double Perovskite SrCuTeWO
Huan-Da Ren, Tian-Yu Xiong, Han-Qing Wu +2
Motivated by experimental observation of the non-magnetic phase in the compounds with frustration and disorder, we study the ground state of the spin- square-lattice Heisenber…