Scholarlink

<p>Optical effects of quantum matter with interaction are key to physics and technology. The class of non-Hermitian (NH) phenomena is mostly explored in cold atoms, photonics, and metamaterials out of equilibrium. Effective NH systems due to interaction in equilibrium solids, however, provide a unique opportunity for realizing light-NH matter hybrids via periodic irradiation. Given NH topological surface states with magnetic disorder, here we reveal spectroscopically observable Floquet spin textures for this hybrid quantum matter: merged meron strings, dichroic skyrmions, and domain structure accompanying vortices in energy planes; Bloch lines and topologically twisted vortex rings distinct from Hopfions in energy-momentum space; topological selectiveness of linear polarization occurs besides circular dichroism. Spectroscopic energy evolution and chemical potential dependence are key ingredients of this open hybrid system. With spin-resolved photoemission spectroscopy, this scenario bears prime physical interest by reaching the crossroad between solid-state interaction effects, non-Hermiticity, and light-matter coupling.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Floquet spin textures in optically pumped non-Hermitian surface states

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月11日

查看全文
  • Xiao-Xiao Zhang,
  • Naoto Nagaosa

摘要

Optical effects of quantum matter with interaction are key to physics and technology. The class of non-Hermitian (NH) phenomena is mostly explored in cold atoms, photonics, and metamaterials out of equilibrium. Effective NH systems due to interaction in equilibrium solids, however, provide a unique opportunity for realizing light-NH matter hybrids via periodic irradiation. Given NH topological surface states with magnetic disorder, here we reveal spectroscopically observable Floquet spin textures for this hybrid quantum matter: merged meron strings, dichroic skyrmions, and domain structure accompanying vortices in energy planes; Bloch lines and topologically twisted vortex rings distinct from Hopfions in energy-momentum space; topological selectiveness of linear polarization occurs besides circular dichroism. Spectroscopic energy evolution and chemical potential dependence are key ingredients of this open hybrid system. With spin-resolved photoemission spectroscopy, this scenario bears prime physical interest by reaching the crossroad between solid-state interaction effects, non-Hermiticity, and light-matter coupling.