JCNS Workshop 2025, Trends and Perspectives in Neutron Scattering. Quantum Materials: Theory and Experiments

We have investigated the influence of curvature on the magnetic properties of a Co-Pd alloy by depositing Co-Pd alloy films, with different thicknesses, on monolayers of silicon dioxide (SiO₂) nanospheres, and on flat silicon substrates. The curved films exhibit enhanced magnetic scattering length density (mSLD), particularly for the thinner films, compared to the flat substrates. This is...

Studying the physics of thin films is the first step towards understanding how ‘quantum’ devices will be controlled as the plethora of phenomena promised by quantum materials can only be fully exploited once they can be fabricated as thin films. Meanwhile, there is a growing focus on scaling up the growth of interesting quantum materials to 200–300 mm wafer size using molecular beam epitaxy...

Magnetic singularities known as Bloch points (BPs) present a fundamental challenge for micromagnetic theory, which is based on the assumption of a fixed magnetization vector length. Due to the divergence of the effective field at a BP, classical micromagnetics fails to adequately
describe BP dynamics. To address this issue, we propose a regularized micromagnetic model in which the...

Frustrated magnets have competing interactions that prevent spins from aligning in a simple order, leading to highly degenerate ground states. To pursue the rich physics and exotic phenomena involved, a variety of geometrically frustrated materials have been uncovered, providing intriguing platforms for the manipulation of complex degrees of freedom [1].
Pyrochlore-structure frustrated...

Rare-earth orthoferrites (RFeO₃, where R is a rare earth element) have been used as model systems in studies and theoretical considerations of magnetic structures since the 1960s [1]. Their complex multiferroic properties have made them potential candidates for modern applications, e.g. in the field of spintronics, and they have therefore regained considerable interest in the last years [2, 3,...

KTaO₃ is a prototypical quantum paraelectric material that lies near a quantum critical point, where a second-order ferroelectric transition is suppressed by quantum fluctuations. Such systems provide unique opportunities to investigate emergent phenomena, including ferroelectricity and superconductivity, which can be induced by slight compositional changes. The study of low-temperature...

Topological quantum materials have attracted enormous attention since their discovery due to the observed anomalous transport properties, which originate from the non-zero Berry curvature. Mn3X compounds show interesting physical properties like Anomalous Hall Effect (AHE), Planar Hall effect (PHE), chiral magnetic effect, and non-local transport properties due to non-vanishing Berry flux...

The search for the quantum spin liquid state has recently been extended from one-dimensional to three-dimensional systems. Nevertheless, the role of strong quenched disorder in three dimensions remains theoretically less explored due to the complexity of the computational methods. The cubic lattice, being the simplest three-dimensional lattice, provides a useful platform for examining the...