论文标题
三角形单层中的抗磁磁性天空的理论研究
Theoretical investigation of antiferromagnetic skyrmions in a triangular monolayer
论文作者
论文摘要
二维（2D）三角系统的手性自旋纹理共存的抗铁磁（AF）Heisenberg交换和手性Dzyaloshinsky-Moriya相互作用，都使用基于平均值理论的优化量子Monte Carlo方法进行了数值研究。我们发现：当垂直于2D单层的外部磁场施加外部磁场时，可以形成螺旋，天线和涡流AF晶体；这些天空和涡旋的尺寸在外部磁场的几个临界点突然变化。这些AF晶体中的每一个都可以分解为三个周期性的铁磁（FM）sublattices。在理论框架中实现的量子成分有助于跟踪AF Skyrmion晶格的存在，以至于低温。
The chiral spin textures of a two-dimensional (2D) triangular system, where both antiferromagnetic (AF) Heisenberg exchange and chiral Dzyaloshinsky-Moriya interactions co-exist, are investigated numerically with an optimized quantum Monte Carlo method based on mean-field theory. We find that: helical, skyrmionic and vortical AF crystals can be formed when an external magnetic field is applied perpendicular to the 2D monolayer; the sizes of these skyrmions and vortices change abruptly at several critical points of the external magnetic field; each of these AF crystals can be decomposed into three periodical ferromagnetic (FM) sublattices. The quantum ingredient implemented into the theoeretical framework helps to track the existence of AF skyrmion lattices down to low temperatures.
