Berry发生：自感Berry磁通和自发非平衡磁性
Berryogenesis: self-induced Berry flux and spontaneous non-equilibrium magnetism
摘要：
自发对称性破缺是描述物质相互作用相的核心。在这里，我们揭示了一个新的机制，通过该机制，受驱动的相互作用系统的时间反演对称驱动场可以自发磁化。我们发现，强内部交流场的金属驱动接近其等离子体共振可能使Berryogenesis：自发产生的自诱导布洛赫带贝里通量。自感贝里通量支持并维持循环等离子体运动，这可能会出现，即使是线性极化的驱动场。这种非平衡相变发生在临界驱动振幅之上，并且可以是连续或不连续类型。Berryogenesis依赖于由于内部场引起的带间相干性的反馈，并且可以容易地发生在各种各样的多频带系统中。我们预计，石墨烯设备，特别是，提供了一个天然的平台，以实现Berryogenesis和等离子体介导的自发非平衡磁化在当今的设备。
英文摘要：
Spontaneous symmetry breaking is central to the description of interacting phases of matter. Here we reveal a new mechanism through which a driven interacting system subject to a time-reversal symmetric driving field can spontaneously magnetize. We show that the strong internal ac fields of a metal driven close to its plasmon resonance may enable Berryogenesis: the spontaneous generation of a self-induced Bloch band Berry flux. The self-induced Berry flux supports and is sustained by a circulating plasmonic motion, which may arise even for a linearly polarized driving field. This non-equilibrium phase transition occurs above a critical driving amplitude, and may be of either continuous or discontinuous type. Berryogenesis relies on feedback due to interband coherences induced by internal fields, and may readily occur in a wide variety of multiband systems. We anticipate that graphene devices, in particular, provide a natural platform to achieve Berryogenesis and plasmon-mediated spontaneous non-equilibrium magnetization in present-day devices.
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