论文标题
激光诱导的Nio/Pt BiLayers中的抗铁磁性180度域的创建
Laser-induced Creation of antiferromagnetic 180-degree domains in NiO/Pt bilayers
论文作者
论文摘要
我们演示了如何通过光脉冲来修饰Nio/Pt薄膜异质结构中的抗磁磁性。我们通过激光光照射样品，并通过对X射线磁性线性二色性效应的创建域结构进行成像，鉴定出光学诱导的抗铁磁结构域的创建。我们研究了不同激光极化对域形成的影响，并确定了非偏振依赖性的180°结构域壁和域具有180°不同的néel矢量方向的影响。通过改变辐照参数，我们确定要热诱导的开关机制并证明可逆性。因此，我们在实验上证明了光学创建抗铁磁域的可能性，这是迈向抗fiferromagnets中所有光学切换机制将来功能化的重要一步。
We demonstrate how the antiferromagnetic order in heterostructures of NiO/Pt thin films can be modified by optical pulses. We irradiate our samples with laser light and identify an optically induced creation of antiferromagnetic domains by imaging the created domain structure utilizing the X-ray magnetic linear dichroism effect. We study the effect of different laser polarizations on the domain formation and identify a polarization-independent creation of 180° domain walls and domains with 180° different Néel vector orientation. By varying the irradiation parameters, we determine the switching mechanism to be thermally induced and demonstrate the reversibility. We thus demonstrate experimentally the possibility to optically create antiferromagnetic domains, an important step towards future functionalization of all optical switching mechanisms in antiferromagnets.
