Enhancement of **domain**-**wall** mobility at the angular momentum compensation
temperature detected by NMR

**domain**-

**wall**mobility. We perform a $^{57}$Fe-NMR study on the ferrimagnet Ho$_3$Fe$_5$O$_{12}$ with $T_{\rm A} = 245$~K. The intensity of the NMR signal from nuclei inside

**domain**

**walls**shows a maximum at $T_{\rm A}$. Conversely, the NMR signal intensity from nuclei inside

**domains**does not show any anomalies at $T_{\rm A}$. Because the

**domain**-

**wall**motion enhances NMR signal from nuclei inside

**domain**walls, the NMR signal is enhanced at $T_{\rm A}$, where the

**domain**-

**wall**mobility increases. The use of NMR in the multi-

**domain**state is a powerful tool to estimate the

**domain**-

**wall**mobility as well as to determine $T_{\rm A}$.

10/10 relevant

arXiv

Anomaly Matching in the Symmetry Broken Phase: **Domain** **Walls**, CPT, and
the Smith Isomorphism

**domain**

**walls**leads to a matching of the original discrete anomaly. Expand abstract.

**domain**walls, and the physics of the

**domain**

**walls**is constrained by the anomaly. We investigate how the physics of the

**domain**

**walls**leads to a matching of the original discrete anomaly. We analyze the symmetry structure on the

**domain**wall, which requires a careful analysis of some properties of the unbreakable CPT symmetry. We demonstrate the general results on some examples and we explain in detail the mod 4 periodic structure that arises in the Z/2 and T case. This gives a physical interpretation for the Smith isomorphism, which we also extend to more general abelian groups. We show that via symmetry breaking and the analysis of the physics on the wall, the computations of certain discrete anomalies are greatly simplified. Using these results we perform new consistency checks on the infrared phases of 2+1 dimensional QCD.

10/10 relevant

arXiv

Topological damping Rashba spin orbit torque in ballistic magnetic
**domain** **walls**

**domain**

**walls**will help to understand experiments on current driven domain

**wall**motion in ferromagnet/heavy metal systems with broken inversion symmetry and to facilitate its utilization in innovative device designs. Expand abstract.

**domain**wall, we found that the decomposition coefficient of the damping component is determined by the topology of the

**domain**

**wall**. The resultant damping Rashba spin orbit torque is protected by the topology of the underlying magnetic

**domain**

**wall**and robust against small deviations from the ideal

**domain**

**wall**profile. Our identification of a topological damping Rashba spin orbit torque component in magnetic

**domain**

**walls**will help to understand experiments on current driven

**domain**

**wall**motion in ferromagnet/heavy metal systems with broken inversion symmetry and to facilitate its utilization in innovative device designs.

10/10 relevant

arXiv

**Domain** **wall** melting in spin-1 chains

7/10 relevant

arXiv

Stabilization of coupled Dzyaloshinskii **domain** **walls** in fully
compensated synthetic anti-ferromagnets

**domain**

**walls**(DWs) in a high DMI SAF is confirmed through application of in-situ perpendicular magnetic field and sample tilt. Expand abstract.

**domain**

**walls**in fully compensated synthetic anti-ferromagnets (SAFs). Ir-based SAFs with ferromagnetic (FM) layers based on [Pt/(Co/Ni)M]N were characterized by Lorentz transmission electron microscopy (LTEM). The multi-layer design of the individual ferromagnetic layers enables control of the interfacial Dzyaloshinskii-Moriya interaction (via 'M') and, in turn, the structure and chirality of

**domain**

**walls**(DWs). We compare the Fresnel-mode LTEM images in SAF designs with only a change in the purported strength of the DMI. The existence of anti-ferromagnetically coupled Dzyaloshinskii

**domain**

**walls**(DWs) in a high DMI SAF is confirmed through application of in-situ perpendicular magnetic field and sample tilt. This conclusion is based on a unique set of conditions required to observe contrast in Fresnel-mode LTEM, which we outline in this document.

10/10 relevant

arXiv

Walker breakdown with a twist: Dynamics of multilayer **domain** **walls** and
skyrmions driven by spin-orbit torque

**domain**

**walls**in some layers start to precess with frequencies in the gigahertz regime, which leads to oscillatory motion and a significant drop in mobility. Expand abstract.

**domain**

**walls**and skyrmions in ferromagnetic perpendicularly magnetized multilayers is studied through three-dimensional micromagnetic simulations and analytical modeling. It is shown that such systems generally exhibit a Walker breakdown-like phenomenon in the presence of current-induced damping-like spin-orbit torque. Above a critical current threshold, corresponding to typical velocities of the order tens of m/s,

**domain**

**walls**in some layers start to precess with frequencies in the gigahertz regime, which leads to oscillatory motion and a significant drop in mobility. This phenomenon originates from complex stray field interactions and occurs for a wide range of multilayer materials and structures that include at least three ferromagnetic layers and finite Dzyaloshinskii-Moriya interaction. An analytical model is developed to describe the precessional dynamics in multilayers with surface-volume stray field interactions, yielding qualitative agreement with micromagnetic simulations.

10/10 relevant

arXiv

The Atiyah-Patodi-Singer index and **domain**-**wall** fermion Dirac operators

**domain**-

**wall**fermions, and edge modes. Expand abstract.

**domain**-

**wall**fermions, and edge modes.

7/10 relevant

arXiv

Charge and spin textures of Ising quantum Hall ferromagnet **domain** **walls**

**domain**walls, both analytically and numerically. We find that any smooth

**domain**

**wall**between two oppositely polarized

**domains**carries a universal quantized charge dipole density proportional to the difference of Landau level indices, $n-m$. Additionally, non-uniformities in the

**domain**

**wall**may give rise to excess net charge localized at the

**domain**

**wall**. Interestingly, the physical spin density associated with the

**domain**

**wall**generally exhibits a much more complex multipolar structure than that of the pseudospin texture. These results should for example help to elucidate the mechanisms underlying nuclear electric resonance and nuclear polarization oscillations in Ising quantum Hall systems.

10/10 relevant

arXiv

**Domain** **wall** and anisotropic magnetoresistance of the antiferromagnet
Mn2Au

**domain**

**wall**related origin of the large resistance effects and relaxation phenomena observed in current induced switching experiments of metallic antiferromagnets. Expand abstract.

**domain**

**wall**related origin of the large resistance effects and relaxation phenomena observed in current induced switching experiments of metallic antiferromagnets.

7/10 relevant

arXiv

Field-free spin-orbit torque switching through **domain** **wall** motion

**domain**nucleation and domain

**wall**motion, which might limit the potentiality of using this type of multilayer stack design for nanoscale SOT-MRAM application. Expand abstract.

**domain**nucleation and

**domain**

**wall**motion, which might limit the potentiality of using this type of multilayer stack design for nanoscale SOT-MRAM application. Comparison of the experimental switching behavior with micromagnetic simulations reveals that the deterministic switching in our devices cannot be explained by the stray field contribution of the in-plane magnetized layer, and the roughness-caused N\'eel coupling effect might play a more important role in achieving the observed field-free deterministic switching.

7/10 relevant

arXiv