论文标题
在单轴抗铁磁绝缘子中观察镁 - 两极
Observation of magnon-polarons in a uniaxial antiferromagnetic insulator
论文作者
论文摘要
镁质 - 果龙是镁和声子之间的一种杂交激发，在Yttrium铁石榴石中首先是在自旋Seebeck效应响应中作为异常。在这里，我们报告了单轴AFM绝缘子CR2O3中抗铁磁（AFM） - 核酸杆菌的观察。尽管镁的能量比〜6 t的自旋触发过渡近的声音子的能量相对较高，但左手的木谱频谱向下移动以与声音声子杂交以形成AFM镁岩石 - 巨星，这也可以通过自旋Seebeck效应来探测。旋转Seebeck信号的建立是由于低温下的镁质核子而增强的。
Magnon-polarons, a type of hybridized excitations between magnons and phonons, were first reported in yttrium iron garnet as anomalies in the spin Seebeck effect responses. Here we report an observation of antiferromagnetic (AFM) magnon-polarons in a uniaxial AFM insulator Cr2O3. Despite the relatively higher energy of magnon than that of the acoustic phonons, near the spin-flop transition of ~ 6 T, the left-handed magnon spectrum shifts downward to hybridize with the acoustic phonons to form AFM magnon-polarons, which can also be probed by the spin Seebeck effect. The spin Seebeck signal is founded to be enhanced due to the magnon-polarons at low temperatures.
