OpenAccess

Iron sulfides (FexSy), including greigite (Fe$_3$S$_4$), are key materials in geological processes and technological applications. However, in the context of colloidal synthesis, the mechanism by which these nanoparticles form remains unexplored. [...]

We studied bulk metallic glasses produced from gas flow-assisted laser-based powder bed fusion process, which is capable of additive manufacturing metallic parts in microgravity. A Zr-based bulk metallic glass composition ZrCuAlNb has been processed on ground and in microgravity in a compact sounding rocket payload MARS-M. [...]

An algorithm for calculating the radiation field of a charged point particle performing a helical motion in an infinite cylindrical waveguide with a multilayer side wall is found. The number of layers and their filling is arbitrary. [...]

This dissertation presents a study of the spin-dependent production of the $\Lambda$ hyperon and the mechanisms of quark fragmentation, with a particular focus on data obtained from the HERMES experiment at DESY. The research explores the role of longitudinal spin effects in semi-inclusive deep-inelastic scattering. [...]

The direct experimental probing and detailed imaging of octahedral tilt, along with the control of magnetic ground state and spin-orbit occupancies in an artificially engineered heterointerface through the strain manipulation via interface engineering, is the long-standing challenging issue addressed here. We introduce an innovative methodology to measure the projected O-O-O angles (O-O-Oproj) between the neighboring in-plane BO6 octahedra of perovskite oxide (ABO3), demonstrating a precise quantification of strain-manipulated octahedral tilt in atomically engineered LaCoO3 (LCO)/La0.7Sr0.3MnO3 (LSMO) bilayer interfaces. [...]

We explore the sensitivity of collider experiments to a broad class of GeV-scale dark vector models of new physics via production in proton and neutron bremsstrahlung and initial state radiation. This is achieved using a new physically motivated model for timelike vector form factors with generic charges for both protons and neutrons, which is fit to a variety of timelike and spacelike data with quantified uncertainties. [...]

The study of non-local operators in gauge theory and holography, such as line-operators or interfaces, has attracted significant attention. Two-dimensional symmetric product orbifolds are close cousins of higher-dimensional gauge theory. [...]

Supercrystalline nanocomposites (SCNCs) are nanostructured hybrid materials with a variety of unique functional properties. Given their periodically arranged building blocks, they also offer interesting parallels with crystalline materials. [...]

During its first phase, from 2004 up to the end of 2012, the H.E.S.S. (High Energy StereoscopicSystem) experiment observed the extragalactic skies for more than 2700 hours. [...]

Ca$_3$CoMnO$_6$ −xMnxO6 is a quasi-one-dimensional Ising chain magnet with a unique collinear up-up-down-down(↑↑↓↓) magnetic ordering, that gives rise to ferroelectricity below the Néel temperature of 13 K. This uniquelong-range magnetic ordering, however, was argued to get stabilized only with Co excess (i.e., x < 1.0) nonstoichiometric Ca$_3$CoMnO$_6$ , and not so for the chemically stoichiometric compound x = 1.0 [...]