双光激发诱导钆铁钴中的磁化切换

IF 3.7 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review B Pub Date : 2024-11-01 DOI:10.1103/physrevb.110.174401

Sergii Parchenko, Arata Tsukamoto, Peter M. Oppeneer, Andreas Scherz

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引用次数: 0

摘要

我们研究了使用两个干涉超短脉冲进行光激发对全光磁化反转过程的影响。利用光学时间分辨技术，我们观察到，与单脉冲激发相比，用两个非共线超短脉冲激发时，钆钴合金中的光诱导磁化切换过程存在明显差异。具体来说，我们发现与非干涉激发相比，干涉脉冲激发时磁化切换所需的阈值通量明显降低。我们进一步讨论了干扰光激发对电子磁动力学的潜在改变，以此作为观察到的趋势的可能解释。

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Magnetization switching in GdFeCo induced by dual optical excitation

We investigate the impact of optical excitation using two interfering ultrashort pulses on the process of all-optical magnetization reversal. Employing optical time-resolved techniques, we observe distinct differences in the process of light-induced magnetization switching in GdFeCo alloy when triggered with two noncollinear ultrashort pulses as compared to single-pulse excitation. Specifically, we find that the threshold fluence required for magnetization switching is significantly reduced when excited with interfering pulses compared to noninferometric excitation. We further discuss the potential modification of the magnetic dynamics of electrons as a result of optical excitation with interfering light as a possible explanation for the observed trends.

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来源期刊

Physical Review B 物理-物理：凝聚态物理

CiteScore

6.70

自引率

32.40%

发文量

审稿时长

3.0 months

期刊介绍： Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide. PRB covers the full range of condensed matter, materials physics, and related subfields, including: -Structure and phase transitions -Ferroelectrics and multiferroics -Disordered systems and alloys -Magnetism -Superconductivity -Electronic structure, photonics, and metamaterials -Semiconductors and mesoscopic systems -Surfaces, nanoscience, and two-dimensional materials -Topological states of matter