2022/12/06 by R. M. Otxoa, G. Tatara, Otxoa, Ruben M. +5
Mathematics · Physics and Astronomy · #Antiferromagnetism #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Collision #Computer science #Condensed matter physics #Domain (mathematical analysis) #Domain wall (magnetism) #Elastic collision #FOS: Physical sciences #Ferromagnetism #Inelastic collision #Magnetic field #Magnetic properties of thin films #Mathematical analysis #Mathematics #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Nonlinear system #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scattering #Soliton #Spin (aerodynamics) #Spintronics
paper · pdf · doi:10.48550/arxiv.2212.03126
openalex publication_date 2022/12/06 · openalex created_date 2022/12/20 · openalex updated_date 2026/08/05
Soliton-based computing is relied on their unique properties for transporting energy and emerging intact from head-on collisions. Magnetic domain walls are often referred to as solitons disregarding the strict mathematical definition requiring the above scattering property. Here we demonstrate the conditions of elastic and inelastic scattering for spin-orbit torque-induced dynamics of antiferromagnetic domain walls on the example of a technologically relevant Mn2Au material. We show that even domain walls with opposite winding numbers can experience elastic scattering and we present a corresponding phase diagram as a function of the spin-orbit field strength and duration. The elastic collision requires minimum domain walls speed which we explain assuming an attractive potential created by domain wall pair. On the contrary, when the domain walls move at lower speeds, their collision is inelastic and results in a dispersing breather. Our findings will be important for the development soliton-based computing using antiferromagnetic spintronics and we discuss these perspective on our suggestions of how to create NOT and XOR gates.