论文标题
中心对称四方系统中的néel，bloch和抗界晶晶体的退化提升
Degeneracy Lifting of Néel, Bloch, and Anti-Skyrmion Crystals in Centrosymmetric Tetragonal Systems
论文作者
论文摘要
Skyrmion晶体在涡旋和螺旋性方面具有内部自由度，这会引起迷人的天际阶段（Néel，Bloch和Anti-Skyrmion）。我们展示了如何通过Fermi表面不稳定性重点关注微观相互作用，如何在中心对称巡回磁铁中发生脱落式升高。我们证明，可以根据各向异性Ruderman-Kittel-Kasuya-Yosida相互作用的迹象来实现四种类型的Skyrmion晶体，这些晶体对带结构，电子填充物，原子轨道填充物，原子轨道和sublattice位置敏感。我们的发现可能提供了通过电子掺杂和外部压力来控制天际晶体类型的可能性，而不是依靠非中心对称晶格结构。
A skyrmion crystal has internal degrees of freedom in terms of vorticity and helicity, which gives rise to fascinating types of skyrmion phases (Néel, Bloch, and anti-skyrmion). We show how the degeneracy lifting in tetragonal skyrmion crystals occurs in centrosymmetric itinerant magnets by focusing on microscopic interactions through the Fermi surface instability. We demonstrate that four types of skyrmion crystals can be realized according to the signs of the anisotropic Ruderman-Kittel-Kasuya-Yosida interaction, which are sensitive to band structures, electron fillings, atomic orbitals, and sublattice positions. Our findings might provide a possibility of controlling the types of the skyrmion crystals by electron doping and external pressure rather than relying on the noncentrosymmetric lattice structures.
