Dependence of a One-Dimensional NÉel-Type Magnetic Domain Wall Resistance on Transverse External Magnetic Field in Presence of Rashba Spin-Orbit Coupling

Abstract

Domain walls in ferromagnetic metals are known to be a source of resistance. We have studied the resistance resulting from a onedimensional Néel-type magnetic domain wall in presence of Rashba spin-orbit coupling and external magnetic field. The analysis has been based on Boltzmann transport equation, within the relaxation time approximation. Through this formalism, we have shown that the spin-flip scattering and the resulting resistance originating from the Rashba spin-orbit coupling can be suppressed by the applied external magnetic field.Index Terms-Magnetic domain wall, magnetic field, resistance, spin-orbit interaction.

Magnetoresistance of non-180° domain wall in the presence of electron-photon interaction

“…Therefore, increasing the photon wavelength which decreases the effect of the Zeeman interaction leads to DWR reduction. The similar DWR reduction by decreasing the external magnetic field [8] and increasing photon wavelength is reported in our previous studies [15] for 180°D Ws. To compare non-180°DWs with 180°DW, the resistance of 30°, 60°, and 180°DWs in the presence of xlinearly polarized photons is also shown in Figure 4.…”

“…From both scientific and technological points of view, understanding the resistance caused by DWs and determining the effect of different scattering sources on the DW resistance (DWR) are essential. For that reason, many research efforts have been made to understand the role of DW in resistivity [4][5][6][7][8][9][10][11][12][13][14][15]. Experiments on iron whiskers demonstrate that DWs are a source of electrical resistance [4].…”

“…Theoretically, Levy and Zhang, by studying MR effect due to the magnetic DW scattering, found that the DWs are a source of spin channel mixing and MR enhancement [6]. In addition, investigation of the effect of Rashba spin orbit interaction on the resistance of DW indicates that this interaction causes an increase in the DWR [7,8]. The temperature dependence of the resistivity of DWs has been also studied.…”

“…In recent years, applying an external magnetic field or propagating a photon to control the DWR has been investigated [13][14][15]. It should be mentioned that most of the present studies [4][5][6][7][8][9][10][11][12][13][14][15] have focused on the ideal 180°DWs despite the fact that DWs with a magnetization rotation of less than 180°a ppear in artificial materials [16,17]. Meanwhile, realization of spintronic devices with improved functionality and performance requires controlling DW configurations and understanding their role in electronic transport.…”

Ballistic transport through a semiconducting magnetic nanocontact in the presence of Rashba and Dresselhaus spin–orbit interactions

“…The effect of the Rashba interaction on the MR of a smooth domain wall in ferromagnetic materials has been studied, too. It has been shown that the spin-flip scattering and consequently the resistivity due to the domain wall increases monotonically with the Rashba interaction strength [20,21]. Similarly, the Dresselhaus spin-orbit interaction can affect the domain wall MR in the semiconducting magnetic structures.…”