Dynamics of all-optical single-shot switching of magnetization in Tb/Co multilayers

被引：12

作者：

Mishra, K. ^{[1
]}

Blank, T. G. H. ^{[1
,2
]}

Davies, C. S. ^{[3
]}

Aviles-Felix, L. ^{[4
]}

Salomoni, D. ^{[4
]}

Buda-Prejbeanu, L. D. ^{[4
]}

Sousa, R. C. ^{[4
]}

Prejbeanu, I. L. ^{[4
]}

Koopmans, B. ^{[2
]}

Rasing, Th. ^{[1
]}

V. Kimel, A. ^{[1
]}

Kirilyuk, A. ^{[3
]}

机构：

[1] Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands

[2] Eindhoven Univ Technol, Dept Appl Phys, POB 513, NL-5600 MB Eindhoven, Netherlands

[3] Radboud Univ Nijmegen, FELIX Lab, Toernooiveld 7, NL-6525 ED Nijmegen, Netherlands

[4] Univ Grenoble Alpes, CNRS, CEA, Grenoble INP,SPINTEC, F-38000 Grenoble, France

来源：

PHYSICAL REVIEW RESEARCH | 2023年 / 5卷 / 02期

基金：

欧洲研究理事会;

关键词：

FERROMAGNETIC-RESONANCE; REVERSAL; TERBIUM; GARNETS;

D O I：

10.1103/PhysRevResearch.5.023163

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent works have shown that the magnetization of Tb/Co multilayers can be switched all-optically by a single ultrashort laser pulse. Surprisingly, the same process cannot be achieved in TbCo alloys. Here, we present a plausible explanation for this difference in behavior based on the known treatment of angular momenta and the associated gyromagnetic ratio of rare-earth-based ferrimagnets. We then study in detail the compositiondependent dynamic behavior of the switching process in Tb/Co multilayers using single-shot time-resolved pump-probe experiments. We show that the observed dynamics is strongly dependent on the excitation fluence and multilayer composition and does not fit into the accepted framework describing the single-shot switching process found in Gd-based systems and Mn-containing Heusler alloys.

引用

页数：13

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