Phase control of spin waves in the van der Waals antiferromagnet NiPS3

被引：3

作者：

Toyoda, Shingo ^{[1
,2
]}

Kruppe, Jonathon ^{[1
,2
]}

Yamakawa, Kohtaro ^{[1
,2
]}

Analytis, James ^{[1
,2
,3
]}

Orenstein, Joseph ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Mat Sci Div, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] CIFAR Quantum Mat, CIFAR, Toronto, ON M5G 1M1, Canada

来源：

PHYSICAL REVIEW B | 2024年 / 109卷 / 06期

关键词：

FERROMAGNETISM; MAGNETIZATION; MAGNETISM; CRYSTAL; DRIVEN;

D O I：

10.1103/PhysRevB.109.064408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate phase control of magnons in the van der Waals antiferromagnet NiPS3 using optical excitation by polarized light. The sign of the coherent precession of spin amplitude changes upon (i) reversing the helicity of a circularly polarized pump beam, or (ii) rotating the polarization of a linearly polarized pump by 7r /2. Because these two excitation pathways have comparable generation efficiency, the phase of spin precession can be continuously tuned from 0 to 27r by controlling the polarization state of the pump pulse. The ability to excite magnons with a desired phase has potential applications in the design of a spin-wave phased array and ultrafast spin information processing.

引用

页数：7

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