反铁磁稀土正铁氧体超快自旋定向的双脉冲全光相干控制

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

APL Materials Pub Date : 2024-05-17 DOI:10.1063/5.0197976

N. E. Khokhlov, A. E. Dolgikh, B. A. Ivanov, A. V. Kimel

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引用次数: 0

摘要

研究表明，一对螺旋方向相反的圆偏振激光脉冲可以控制稀土反铁磁性正铁(Sm0.55Tb0.45)FeO3的自旋重新定向相变路线。脉冲之间的延迟和样品温度可以有效地控制自旋重新定向相变的路线。利用以前发表的正铁中激光诱导自旋动力学模型进行的模拟未能再现实验结果。我们认为，失败的原因是忽略了材料中反铁磁共振阻尼的温度依赖性。考虑到实验推导出的阻尼温度依赖性，我们在模拟和实验之间获得了良好的一致性。

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Double pulse all-optical coherent control of ultrafast spin-reorientation in an antiferromagnetic rare-earth orthoferrite

A pair of circularly polarized laser pulses of opposite helicities are shown to control the route of spin reorientation phase transition in the rare-earth antiferromagnetic orthoferrite (Sm0.55Tb0.45)FeO3. The route can be efficiently controlled by the delay between the pulses and the sample temperature. Simulations employing previously published models of laser-induced spin dynamics in orthoferrites failed to reproduce the experimental results. We suggest that the failure is due to neglected temperature dependence of the antiferromagnetic resonance damping in the material. Taking into account the experimentally deduced temperature dependence of the damping, we obtained good agreement between the simulations and the experiment.

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来源期刊

APL Materials NANOSCIENCE & NANOTECHNOLOGYMATERIALS SCIE-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

9.60

自引率

3.30%

发文量

199

审稿时长

2 months

期刊介绍： APL Materials features original, experimental research on significant topical issues within the field of materials science. In order to highlight research at the forefront of materials science, emphasis is given to the quality and timeliness of the work. The journal considers theory or calculation when the work is particularly timely and relevant to applications. In addition to regular articles, the journal also publishes Special Topics, which report on cutting-edge areas in materials science, such as Perovskite Solar Cells, 2D Materials, and Beyond Lithium Ion Batteries.