2025/04/07 by Li, Han-Bing, Shao, Zhi-Gang
#Computational Physics (physics.comp-ph) #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci)
paper · doi:10.48550/arxiv.2504.04694
Achieving altermagnetism (AM) in two-dimensional materials is crucial for advancing the development of novel spintronic devices. This study introduces an innovative strategy to realize AM in monolayer materials by adsorbing non-magnetic sp impurity atoms to construct planar bridges. Using holey graphyne (HGY) as the research object, first-principles calculations reveal that B and S impurity atoms can modulate the local electronic structure and trigger a superexchange mechanism, inducing a collinear compensated antiferromagnetic ground state with pronounced altermagnetic properties. Among these, the B adsorption system exhibits the best magnetic performance, with a N\rm \acuteeel temperature reaching approximately 210 K. This work offers a flexible and effective strategy to achieve AM in single-atomic-layer materials and p-electron systems.