Ultrafast coherent all-optical switching of an antiferromagnet with the inverse Faraday effect

被引：20

作者：

Dannegger, Tobias ^{[1
]}

Berritta, Marco ^{[2
]}

Carva, Karel ^{[3
]}

Selzer, Severin ^{[1
]}

Ritzmann, Ulrike ^{[2
,4
,5
]}

Oppeneer, Peter M. ^{[2
]}

Nowak, Ulrich ^{[1
]}

机构：

[1] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

[2] Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden

[3] Charles Univ Prague, Fac Math & Phys, Dept Condensed Matter Phys, CZ-12116 Prague, Czech Republic

[4] Free Univ Berlin, Dahlem Ctr Complex Quantum Syst, D-14195 Berlin, Germany

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

来源：

PHYSICAL REVIEW B | 2021年 / 104卷 / 06期

基金：

瑞典研究理事会;

关键词：

EXCHANGE INTERACTIONS; MAGNETIZATION; REVERSAL;

D O I：

10.1103/PhysRevB.104.L060413

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We explore the possibility of ultrafast, coherent all-optical magnetization switching in antiferromagnets by studying the action of the inverse Faraday effect in CrPt, an easy-plane antiferromagnet. Using a combination of density-functional theory and atomistic spin dynamics simulations, we show how a circularly polarized laser pulse can switch the order parameter of the antiferromagnet within a few hundred femtoseconds. This nonthermal switching takes place on an elliptical path, driven by the staggered magnetic moments induced by the inverse Faraday effect and leading to reliable switching between two perpendicular magnetic states.

引用

页数：6

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