论文标题
由于自发的准粒子衰变而导致的天空晶体晶体本征量的量子阻尼
Quantum Damping of Skyrmion Crystal Eigenmodes due to Spontaneous Quasiparticle Decay
论文作者
论文摘要
Skyrmion晶体的基本激发经历了新兴的磁场和拓扑非平地非共线纹理带来的非谐波相互作用。所得的平谱带会引起强大的自发性准粒子衰减，使Skyrmion晶体的特征型具有有限的零温度量子寿命。通过更改磁场将平坦带扫除平面带导致外部可控制的能量选择性磁蛋白分解。特别是，我们发现三种基本模式，即逆时针，呼吸和顺时针模式，表现出明显的衰减行为，顺时针（逆时针）模式是三种中最小（大多数）稳定模式。
The elementary excitations of skyrmion crystals experience both emergent magnetic fields and anharmonic interactions brought about by the topologically nontrivial noncollinear texture. The resulting flat bands cause strong spontaneous quasiparticle decay, dressing the eigenmodes of skyrmion crystals with a finite zero-temperature quantum lifetime. Sweeping the flat bands through the spectrum by changing the magnetic field leads to an externally controllable energy-selective magnon breakdown. In particular, we uncover that the three fundamental modes, i.e., the anticlockwise, breathing, and clockwise mode, exhibit distinct decay behavior, with the clockwise (anticlockwise) mode being the least (most) stable mode out of the three.
