Magnon-Driven Domain-Wall Motion with the Dzyaloshinskii-Moriya Interaction

Wang, Weiwei; Albert, Maximilian; Beg, Marijan; Bisotti, Marc-Antonio; Chernyshenko, Dmitri; Cortés‐Ortuño, David; Hawke, Ian; Fangohr, Hans

doi:10.1103/physrevlett.114.087203

Cited by 85 publications

(84 citation statements)

References 37 publications

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“…The DMI fieldlike torque is analogous to the DMI magnonic momentum transfer torque studied in Ref. [23]. As evident, the DMI entropic torque is quite susceptible to the DMI constant D and to the DW distortion parameter ξ .…”

Section: Domain-wall Dynamicsmentioning

confidence: 80%

“…The DW moves to the cold edge. Here we study the dynamics of thin DWs which are transparent for magnonic currents in the presence of DMI [23].…”

Section: Domain-wall Dynamicsmentioning

confidence: 99%

“…The DMI leads to a finite distortion of the DW's configuration. The distortion function φ 2 is a linear function of x − q, φ 2 = (x − q)/ξ [23].…”

Section: Domain-wall Dynamicsmentioning

confidence: 99%

“…The role of the DMI in the formation of the reactive and dissipative thermomagnonic torques has been studied in [22]. DMI can also change the direction and the speed of the magnonic current and it generates a magnonic momentum transfer torque [23]. This torque can drastically influence the motion of the DW in a nanowire.…”

Section: Introductionmentioning

confidence: 99%

“…However, these effects are not precisely categorized in the sense of their cumulative impact on the DW's motion, despite the huge interest in DWs, [22][23][24][25][26][27]. Therefore, in the present work we intend to build up a comprehensible description of this impact.…”

Section: Introductionmentioning

confidence: 99%

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Thermally induced magnonic spin current, thermomagnonic torques, and domain-wall dynamics in the presence of Dzyaloshinskii-Moriya interaction

et al. 2016

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Thermally activated domain-wall (DW) motion in magnetic insulators has been considered theoretically, with a particular focus on the role of Dzyaloshinskii-Moriya interaction (DMI) and thermomagnonic torques. The thermally assisted DW motion is a consequence of the magnonic spin current due to the applied thermal bias. In addition to the exchange magnonic spin current and the exchange adiabatic and the entropic spin transfer torques, we also consider the DMI-induced magnonic spin current, thermomagnonic DMI fieldlike torque, and the DMI entropic torque. Analytical estimations are supported by numerical calculations. We found that the DMI has a substantial influence on the size and the geometry of DWs, and that the DWs become oriented parallel to the long axis of the nanostrip. Increasing the temperature smoothes the DWs. Moreover, the thermally induced magnonic current generates a torque on the DWs, which is responsible for their motion. From our analysis it follows that for a large enough DMI the influence of DMI-induced fieldlike torque is much stronger than that of the DMI and the exchange entropic torques. By manipulating the strength of the DMI constant, one can control the speed of the DW motion, and the direction of the DW motion can be switched, as well. We also found that DMI not only contributes to the total magnonic current, but also it modifies the exchange magnonic spin current, and this modification depends on the orientation of the steady-state magnetization. The observed phenomenon can be utilized in spin caloritronics devices, for example in the DMI based thermal diodes. By switching the magnetization direction, one can rectify the total magnonic spin current.

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Section: Domain-wall Dynamicsmentioning

confidence: 80%

“…The DW moves to the cold edge. Here we study the dynamics of thin DWs which are transparent for magnonic currents in the presence of DMI [23].…”

Section: Domain-wall Dynamicsmentioning

confidence: 99%

“…The DMI leads to a finite distortion of the DW's configuration. The distortion function φ 2 is a linear function of x − q, φ 2 = (x − q)/ξ [23].…”

Section: Domain-wall Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermally induced magnonic spin current, thermomagnonic torques, and domain-wall dynamics in the presence of Dzyaloshinskii-Moriya interaction

et al. 2016

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Micromagnetic simulation tools: OOMMF, Mumax3, and COMSOL Multiphysics

Hua,

Wu,

2024

Magnetic Nanoparticles in Nanomedicine

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Magnetic Nanowires and Nanotubes

Staňo

Fruchart

2018

Handbook of Magnetic Materials

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We propose a review of the current knowledge about the synthesis, magnetic properties and applications of magnetic cylindrical nanowires and nanotubes. By nano we consider diameters reasonably smaller than a micrometer. At this scale, comparable to micromagnetic and transport length scales, novel properties appear. At the same time, this makes the underlying physics easier to understand due to the limiter number of degrees of freedom involved. The three-dimensional nature and the curvature of these objects contribute also to their specific properties, compared to patterns flat elements. While the topic of nanowires and later nanotubes started now decades ago, it is nevertheless flourishing, thanks to the progress of synthesis, theory and characterization tools. These give access to ever more complex and thus functional structures, and also shifting the focus from material-type measurements of large assemblies, to single-object investigations. We first provide an overview of common fabrication methods yielding nanowires, nanotubes and structures engineered in geometry (change in diameter, shape) or material (segments, core-shell structures), shape or core-shell. We then review their magnetic properties: global measurements, magnetization states and switching, single domain wall statics and dynamics, and spin waves. For each aspect, both theory and experiments are surveyed. We also mention standard characterization techniques useful for these. We finally mention emerging applications of magnetic nanowires and nanotubes, along with the foreseen perspectives in the topic.

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Magnon-Driven Domain-Wall Motion with the Dzyaloshinskii-Moriya Interaction

Cited by 85 publications

References 37 publications

Thermally induced magnonic spin current, thermomagnonic torques, and domain-wall dynamics in the presence of Dzyaloshinskii-Moriya interaction

Thermally induced magnonic spin current, thermomagnonic torques, and domain-wall dynamics in the presence of Dzyaloshinskii-Moriya interaction

Micromagnetic simulation tools: OOMMF, Mumax3, and COMSOL Multiphysics

Magnetic Nanowires and Nanotubes

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