supported by the National Natural Science Foundation of China(Grant No.12274126);supports from the National Natural Science Foundation of China(Grant Nos.12074031,and 12234016);supports from the National Natural Science Foundation of China(Grant Nos.12274287,and 12042507);the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0301900)。
The spin-1/2 model system with antiferromagnetic(AF) couplings on a J1-J2checkerboard lattice, known as the planar pyrochlore model, is strongly frustrated and associated with a two-to-one dimensional crossover. Using...