Dzyaloshinskii-Moriya interaction in the presence of Rashba and Dresselhaus spin-orbit coupling

Abstract

Chiral order in magnetic structures is currently an area of considerable interest and leads to the skyrmion structures and domain walls with certain chirality. The chiral structure originates from the Dzyaloshinskii-Moriya interaction caused by broken inversion symmetry and the spin-orbit interaction. In addition to the Rashba or Dresselhaus interactions, there may also exist substantial spin polarization in magnetic thin films. Here, we study the exchange interaction between two localized magnetic moments in the spin-polarized electron gas with both Rashba and Dresselhaus spin-orbit interaction present. Analytical expressions are found in certain limits in addition to what is known in the literature. The stability of the Bloch and Néel domain walls in magnetic thin films is discussed in light of our results.

Spin‐Orbit Coupling in All‐Electron Mixed Basis Approach

“…Reliable first‐principles determination of fine splitting of electronic levels due to the spin‐orbit coupling (SOC) is often required to compare with precise experimental data such as X‐ray photoelectron spectra (XPS) . The SOC is also very important in Rashba effect, Dzyalosihskii–Moriya interaction, quantum qubit such as NV − center, spintronics, topological insulators, and so on. There is a timely importance in the SOC also because the current induced magnetization switching spintronic devices recently invented by using the spin‐orbit torques originating from the SOC .…”