Single laser pulse induced magnetization switching in in-plane magnetized GdCo alloys

被引：13

作者：

Lin, Jun-Xiao ^{[1
]}

Hehn, Michel ^{[1
,2
]}

Hauet, Thomas ^{[1
]}

Peng, Yi ^{[1
]}

Igarashi, Junta ^{[1
]}

Le Guen, Yann ^{[1
]}

Remy, Quentin ^{[3
]}

Gorchon, Jon ^{[1
]}

Malinowski, Gregory ^{[1
]}

Mangin, Stephane ^{[1
,2
]}

Hohlfeld, Julius ^{[1
]}

机构：

[1] Univ Lorraine, Inst Jean Lamour, CNRS, F-54000 Nancy, France

[2] Tohoku Univ, Ctr Sci & Innovat Spintron CSIS, Sendai 9808577, Japan

[3] Free Univ Berlin, Dept Phys, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW B | 2023年 / 108卷 / 22期

关键词：

Binary alloys - Cobalt alloys - Femtosecond lasers - Gadolinium alloys - Laser pulses - Magnetization;

D O I：

10.1103/PhysRevB.108.L220403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The discovery of all-optical ultrafast deterministic magnetization switching has opened up new possibilities for manipulating magnetization in devices using femtosecond laser pulses. Previous studies on single pulse all-optical helicity-independent switching (AO-HIS) have mainly focused on perpendicularly magnetized thin films. This work presents a comprehensive study on AO-HIS for in-plane magnetized GdxCo100-xthin films. Deterministic single femtosecond laser pulse toggle magnetization switching is demonstrated in a wider concentration range (x = 10-25%) compared to the perpendicularly magnetized counterparts with GdCo thicknesses up to 30 nm. The switching time strongly depends on the GdxCo100-x concentration, with lower Gd concentration exhibiting shorter switching times (less than 500 fs). Our findings in this geometry provide insights into the underlying mechanisms governing single pulse AO-HIS, which challenge existing theoretical predictions. Moreover, in-plane magnetized GdxCo100-xthin films offer extended potential for optospintronic applications compared to their perpendicular magnetized counterparts.

引用

页数：8

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