发表机构
University of Missouri; Norwegian University of Science and Technology（密苏里大学; 挪威科技大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究光驱动p波磁体，揭示其微运动中隐藏的净自旋极化，该极化在特定条件下振荡且共振增强，还激活轨道角动量，通过非线性整流产生静态轨道极化，证明p波磁体是特殊极化效应的来源。
AI 中文摘要
周期平均描述常常忽略驱动量子物质的基本特征。我们表明，光驱动p波磁体的微运动会揭示出一种隐藏的净自旋极化，这在平衡态和周期平均自旋纹理中均不存在，且在动量上保持奇数性。这种自旋极化以驱动频率振荡，并在由非相对论交换分裂设定的带间间隙处共振增强。驱动还激活了由带间量子几何控制的轨道角动量。虽然其线性响应在动量上仍为奇数，但非线性整流会为适当取向的驱动场产生静态、动量偶数的轨道极化。这些结果表明p波磁体是共振交流自旋和整流直流轨道极化的来源，这些效应是任何周期平均处理都无法看到的。
英文摘要
Odd-parity magnets have strong spin polarization in momentum space but no net magnetization, making their spin texture hidden from conventional magnetometry. We show that a monochromatic electric field dynamically lifts this cancellation in a $p$-wave magnet. Within each drive cycle, the field produces a net ac spin polarization linear in the driving field whose interband component is resonantly enhanced at the nonrelativistic exchange gap. Because this polarization oscillates at the drive frequency, it vanishes upon period averaging. The orbital channel follows a different hierarchy: its linear response cancels in momentum space, whereas interband coherence produces a rectified dc orbital polarization at second order when the field has components parallel and transverse to the $p$-wave spin-splitting direction. Together, the ac spin and dc orbital responses dynamically unmask $p$-wave magnetism without requiring any spin-orbit coupling.
Comments9+26 pages, 3+10 figures; Added Supplemental Material
