Spin-orbit-locked coupling of localized microwaves to magnons

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Physical Review Applied Pub Date : 2024-09-17 DOI:10.1103/physrevapplied.22.034042

Chengyuan Cai, Zubiao Zhang, Ji Zou, Gerrit E. W. Bauer, Tao Yu

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引用次数: 0

Abstract

We address the photonic spin-orbit coupling known from nano-optics and plasmonics in the microwave regime. The spin

S

and momentum

q

of microwaves emitted by an excited magnetic particle are locked by

q \cdot S = 0

with a fixed chirality

\hat{n} \cdot (\hat{S} \times \hat{q}) = 1

when evanescent along

\hat{n} ⊥ q

. This field excites magnons in a nearby magnetic film in the form of directional beams that rotate with the magnetization direction. The exchange of these magnons between two distant nanomagnets leads to a highly tunable strong coupling and entangles their excited states.

Abstract Image

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局部微波与磁子的自旋轨道锁定耦合

我们探讨了微波体系中纳米光学和等离子体学中已知的光子自旋轨道耦合。受激磁性粒子发射的微波的自旋 S 和动量 q 被 q⋅S=0 锁定，当沿 n^⊥q 蒸发时，具有固定的手性 n^⋅（S^×q^）=1。这个磁场会在附近的磁性薄膜中激发出磁子，这些磁子以定向束的形式随磁化方向旋转。这些磁子在两个相距甚远的纳米磁体之间的交换导致了高度可调的强耦合，并使它们的激发态纠缠在一起。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review Applied PHYSICS, APPLIED-

CiteScore

7.80

自引率

8.70%

发文量

760

审稿时长

2.5 months

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