Intertwined order in fractional Chern insulators from finite-momentum pairing of composite fermions | |
Article | |
关键词: 2-DIMENSIONAL ELECTRON LIQUID; DENSITY-WAVE; 2 DIMENSIONS; HALL; SUPERCONDUCTIVITY; BREAKING; PHASE; | |
DOI : 10.1103/PhysRevB.101.245154 | |
来源: SCIE |
【 摘 要 】
We investigate the problem of intertwined orders in fractional Chern insulators by considering lattice fractional quantum Hall (FQH) states arising from pairing of composite fermions in the square-lattice Hofstadter model. At certain filling fractions, magnetic translation symmetry ensures the composite fermions form Fermi surfaces with multiple pockets, leading to the formation of finite-momentum Cooper pairs in the presence of attractive interactions. We obtain mean-field phase diagrams exhibiting a rich array of striped and topological phases, establishing paired lattice FQH states as an ideal platform to investigate the intertwining of topological and conventional broken symmetry order.
【 授权许可】
Free