Yamane Yuta, Fukami Shunsuke, Ieda Jun'ichi
Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan.
Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan.
Phys Rev Lett. 2022 Apr 8;128(14):147201. doi: 10.1103/PhysRevLett.128.147201.
We extend the theory of emergent inductance, which has recently been discovered in spiral magnets, to arbitrary magnetic textures by taking into account spin-orbit couplings arising in the absence of spatial inversion symmetry. We propose a new concept of spin-orbit emergent inductance, which can be formulated as originating from a dynamical Aharonov-Casher phase of an electron in ferromagnets. The spin-orbit emergent inductance universally arises in the coexistence of magnetism and the spin-orbit couplings, even with spatially uniform magnetization, allowing its stable operation in wide ranges of temperature and frequency. Revisiting the widely studied systems involving ferromagnets with spatial inversion asymmetry, with the new perspective offered by our work, will lead to opening a new paradigm in the study of spin-orbit physics and the spintronics-based power management in ultrawideband frequency range.
我们将最近在螺旋磁体中发现的涌现电感理论扩展到任意磁结构，方法是考虑在没有空间反演对称性的情况下产生的自旋轨道耦合。我们提出了自旋轨道涌现电感的新概念，它可以被表述为源于铁磁体中电子的动态阿哈罗诺夫 - 卡什尔相位。自旋轨道涌现电感普遍出现在磁性和自旋轨道耦合共存的情况下，即使在空间均匀磁化时也是如此，这使得它能够在很宽的温度和频率范围内稳定运行。从我们工作提供的新视角重新审视广泛研究的涉及具有空间反演不对称性的铁磁体的系统，将为超宽带频率范围内的自旋轨道物理研究和基于自旋电子学的功率管理开启一个新的范式。
