A5083166681- Magnetic properties of thin films
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Multiferroics and related materials
- Magnetic and transport properties of perovskites and related materials
- Theoretical and Computational Physics
- Magnetic Properties and Applications
- Magnetic Properties of Alloys
- Metallic Glasses and Amorphous Alloys
- Magneto-Optical Properties and Applications
Johannes Gutenberg University Mainz
2021-2024
National Institute of Science Education and Research
2022
Homi Bhabha National Institute
2022
The ever-growing demand for device miniaturization and energy efficiency in data storage computing technology has prompted a shift towards antiferromagnetic topological spin textures as information carriers. This is primarily owing to their negligible stray fields, leading higher possible density potentially ultrafast dynamics. We realize this work such chiral in-plane namely merons, antimerons, bimerons synthetic antiferromagnets by concurrently engineering the effective perpendicular...
Spin Seebeck effect refers to the creation of spin currents due a temperature gradient in magnetic materials or across magnet-normal metal interfaces, which can be electrically detected through inverse Hall when contact with heavy metals. It offers fundamental insights into properties materials, including phase transition, static order, and magnon excitations. The behavior spin-flop transition has been extensively studied, whereas spin-flip remains poorly understood. Here, we demonstrate...
Abstract The evolution of chiral spin structures is studied in ferrimagnetic Ta/Ir/Fe/GdFeCo/Pt multilayers as a function temperature using scanning electron microscopy with polarization analysis (SEMPA). GdFeCo ferrimagnet exhibits pure right‐handed Néel‐type domain wall (DW) textures over large range. This indicates the presence negative Dzyaloshinskii–Moriya interaction that can originate from both top Fe/Pt and Co/Pt interfaces. From measurements DW width, well complementary magnetic...
The electric-field control of magnetism is a highly promising and potentially effective approach for realizing energy-efficient applications. Recent interest has focused on the magneto-ionic effect in synthetic antiferromagnets, driven by its potential to enable high-density data storage devices with ultra-low power consumption. However, underlying mechanism responsible interlayer exchange coupling remains elusive. In our work, we find that modulation sensitive thickness ferromagnetic layer....
Exotic spin textures viz. chiral domain wall, vortices, skyrmion, skyrmionium, etc. have recently emerged as active field of research because their potential applications in high density data storage technology and logic gate computing. Magnetic skyrmionium is a skyrmion like soliton, which carries zero topological quantum number. Skyrmioniums are superior to conventional skyrmions ferromagnets due negligible hall effect higher velocity. The physical properties both been investigated...
Topological spin textures in magnetic materials beyond two-dimensional skyrmions have attracted attention for electronics CMOS technologies. In particular, three-dimensional (3D) topological are promising due to the expected complex non-linear dynamics as well high static and dynamic thermal stability. multilayer heterostructures, a hybrid chiral skyrmion tube is well-known example of 3D texture, exhibiting an intriguing chirality transition along thickness direction. This progresses from...
Topological magnetic textures, characterized by integer topological chargeS, are potential candidates in future logic and memory devices, due to their smaller size expected low threshold current density for motion. An essential requirement stabilize them is the Dzyaloshinskii-Moriya interaction (DMI) which promotes a particular chirality, leading unique value ofSin given material. However, recently coexistence of skyrmions antiskyrmions, with opposite charge, frustrated ferromagnets has been...
The ever-growing demand for device miniaturization and energy efficiency in data storage computing technology has prompted a shift towards antiferromagnetic (AFM) topological spin textures as information carriers, owing to their negligible stray fields, leading possible high density potentially ultrafast dynamics. We realize, this work, such chiral in-plane (IP) textures, namely merons, antimerons, bimerons synthetic antiferromagnets by concurrently engineering the effective perpendicular...
The electric-field control of magnetism is a highly promising and potentially effective approach for achieving energy-efficient applications. In recent times, there has been significant interest in the magneto-ionic effect synthetic antiferromagnets, primarily due to its strong potential realization high-density storage devices with ultra-low power consumption. However, underlying mechanism responsible on interlayer exchange coupling (IEC) remains elusive. this study, we have successfully...
Topological magnetic textures, characterized by integer topological charge $S$, are potential candidates in future logic and memory devices, due to their smaller size expected low threshold current density for motion. An essential requirement stabilize them is the Dzyaloshinskii-Moriya interaction (DMI) which promotes a particular chirality, leading unique value of $S$ given material. However, recently coexistence skyrmions antiskyrmions, with opposite charge, frustrated ferromagnets has...
The evolution of chiral spin structures is studied in ferrimagnet Ta/Ir/Fe/GdFeCo/Pt multilayers as a function temperature using scanning electron microscopy with polarization analysis (SEMPA). GdFeCo exhibits pure right-hand Néel-type domain wall (DW) textures over large range. This indicates the presence negative Dzyaloshinskii-Moriya interaction (DMI) that can originate from both top Fe/Pt and Co/Pt interfaces. From measurements DW width, well complementary magnetic characterization,...