Monopoles in ferromagnetic metals
Gen Tatara, Akihito Takeuchi, Noriyuki Nakabayashi, Katsuhisa, Taguchi
TL;DR
This paper reviews monopoles in ferromagnetic metals, focusing on theoretical derivations of hedgehog and spin damping monopoles, highlighting their potential in spintronics applications.
Contribution
It introduces and derives two specific monopoles in ferromagnetic metals, emphasizing the spin damping monopole's role in coupling electronics with magnetism.
Findings
Spin damping monopoles can be generated in simple ferromagnet-heavy element junctions.
Theoretical derivation of hedgehog and spin damping monopoles.
Spin damping monopoles are crucial for spintronics applications.
Abstract
The aim of this short review is to give an introduction to monopoles and to present theoretical derivation of two particular monopoles in ferromagnetic metals, a hedgehog monopole and a spin damping monopole. Spin damping monopoles can be generated in simple systems such as a junction of a ferromagnet and a heavy element with strong spin-orbit interaction such as Pt. This monopole is essential in coupling electronics with magnetism, and is thus expected to play an essential role in spintronics.
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