This comprehensive study delves into the complex magnetic properties and interactions of the perovskite-like compound CaCu$_3$Ti$_4$O$_{12}$, employing advanced neutron scattering techniques and resonant inelastic X-ray scattering (RIXS) to explore the underlying spin-orbital coupling and single-ion anisotropy. By synthesizing high-quality single crystals and utilizing a four-circle neutron...
Pyrochlore magnets (R₂M₂O₇), with rare-earth ions arranged on corner-linked tetrahedra, are key to understanding magnetic frustration. These systems display diverse magnetic behaviors, including spin ice and spin liquid. Recently, researchers are exploring exotic magnetism by chemically manipulating or diluting these spin systems. We present magnetization and neutron-scattering measurements on...
Two-dimensional van der Waals (2D-vdW) ferromagnets are at the forefront of current condensed matter physics and materials science research due to their fascinating magnetic properties and massive potential in technological applications, such as magnetic tunnel junctions or spin current transmission. Fe$_{3}$GaTe$_{2}$, having a hexagonal structure of space group P63/mmc, is a new 2D-vdW...
Ba3MA2O9 compounds have gained significant attention due to various exotic magnetic ground states depending upon the various combinations of M and A atoms. For instance: Ba3NiSb2O9, Ba3CuSb2O9, and Ba3IrTi2O9 exhibit quantum spin-liquid behavior [1-3], while Ba3ZnIr2O9 [4] shows a quantum spin-orbital liquid state. However, the magnetic ground of these compounds with M = rare-earth and A = 4d...
Antiferromagnetic $Ba_{2}CuGe_{2}O_{7}$, characterized by a quasi-2D structure with Dzyaloshinskii-Moriya interactions (DMI), is a material that exhibits spiral spin structures with potential non-trivial topology and combines them with a variety of unconventional magnetic phase transitions. $Ba_{2}CuGe_{2}O_{7}$ is an insulator characterized by a tetragonal, non-centrosymmetric space group...
LaCoO$_3$ has been the subject of an intense investigation due to its intriguing transformation from a nonmagnetic insulator at low temperatures to a paramagnetic semiconductor, followed by an insulator-to-metal crossover. The nature of these transitions is the topic of long-standing and ongoing discussions. Generally, these crossovers are associated with the population of Cobalt low-spin (S =...
Pt/Co/Pt and Pd/Co/Pd heterostructures with perpendicular magnetic anisotropy (PMA) are traditionally used for magnetic recording. PMA can be tuned by e.g. thin film thickness, strain, ion bombardment or temperature. Recently, it has been shown that the absorption of hydrogen in the heavy metal modifies the interfacial spin-orbit coupling and hence reduces the PMA.[1-3] As a result, reversible...
Magnonics is a multidisciplinary field of research focusing on the study and application of magnons in information processing and technology [1]. Magnons can carry the spin information through thermally generated spin-wave spin currents over the large distances [2]. Insulating antiferromagnets (AFMs) are promising for next-generation high-density and high-speed spintronic applications due to...
Correlated oxides are the ideal platform for hydrogen induced structural and electronic modifications, due to the presence of high amount of oxygen, a quite flexible crystal structure and the delicate balance between structural and electronic degrees of freedom. A striking example are the nickelates, for which hydrogen can induce metal to insulator transitions [1], superconductivity [2], and...
