论文标题
Kitaev-Heisenberg磁铁$α$ -rucl $ _3 $
Nonequilibrium quasistationary spin disordered state in the Kitaev-Heisenberg magnet $α$-RuCl$_3$
论文作者
论文摘要
光脉冲激发可以操纵量子缩合物的相。在这里，我们将光兴还能高能Holon-Doublon对，以改变Kitaev-Heisenberg Magnet $α$ -RUCL $ _3 $的磁性自由能景观，目的是动态稳定一个近距离的旋转液相。通过磁性线性二色性的时间进化，通过竞争性锯齿形旋转有序的基态的磁性线性二色性，通过磁性线性二色性的时间进化来追踪通过多磁带发射的Holon-Doublon对重组。一个小的Holon-Doublon密度足以达到自旋疾病状态。相变在动态的金茨堡 - 兰道框架中描述，证实了瞬态自旋疾病相的绝对性质。我们的工作提供了有关$α$ -rucl $ _3 $中电子自由度和磁性自由度之间的耦合的见解，并提出了一条新的途径，以达到Kitaev-Heisenberg Magnets的近距离自旋液相。
Excitation by light pulses enables the manipulation of phases of quantum condensed matter. Here, we photoexcite high-energy holon-doublon pairs as a way to alter the magnetic free energy landscape of the Kitaev-Heisenberg magnet $α$-RuCl$_3$, with the aim to dynamically stabilize a proximate spin liquid phase. The holon-doublon pair recombination through multimagnon emission is tracked through the time-evolution of the magnetic linear dichroism originating from the competing zigzag spin ordered ground state. A small holon-doublon density suffices to reach a spin disordered state. The phase transition is described within a dynamic Ginzburg-Landau framework, corroborating the quasistationary nature of the transient spin disordered phase. Our work provides insight into the coupling between the electronic and magnetic degrees of freedom in $α$-RuCl$_3$ and suggests a new route to reach a proximate spin liquid phase in Kitaev-Heisenberg magnets.
