论文标题
在强磁场中沮丧的各向异性抗铁磁铁中的阶段竞争
Phase competition in frustrated anisotropic antiferromagnet in strong magnetic field
论文作者
论文摘要
从理论上讲，我们在接近饱和度的磁场中讨论了一个沮丧的海森堡抗铁磁铁。证明一个小的双轴各向异性和/或磁性偶极相互作用在相之间具有相应的倾斜，不相称的螺旋（圆锥体）和风扇旋转顺序的相互平衡。结果，根据这些小小的各向异性相互作用的值，实现了不同的相变序列。我们得出了与我们和以前的蒙特 - 卡洛模拟一致的临界场和地面能量的分析表达式。
We discuss theoretically a frustrated Heisenberg antiferromagnet in magnetic field close to the saturation one. It is demonstrated that a small biaxial anisotropy and/or the magnetic dipolar interaction produce a delicate balance between phases with a commensurate canted, incommensurate helical (conical), and fan spin orderings. As a result, different sequences of phase transitions are realized depending on values of these small anisotropic interactions. We derive analytical expressions for critical fields and ground-state energies of the phases which are in a quantitative agreement with our and previous Monte-Carlo simulations.
