Physics (Scholarly Publications): Recent submissions
Now showing items 161-180 of 1742
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Nanodomain structure of single crystalline nickel oxide
(2021)In this work we present a comprehensive study of the domain structure of a nickel oxide single crystal grown by floating zone melting and suggest a correlation between point defects and the observed domain structure. The ... -
The influence of drinking water constituents on the level of microplastic release from plastic kettles
(2022)Microplastic (MP) release from household plastic products has become a global concern due to the high recorded levels of microplastic and the direct risk of human exposure. However, the most widely used MP measurement ... -
Cyclic production of biocompatible few-layer graphene ink with in-line shear-mixing for inkjet-printed electrodes and Li-ion energy storage
(2022)The scalable production of two-dimensional (2D) materials is needed to accelerate their adoption to industry. In this work, we present a low-cost in-line and enclosed process of exfoliation based on high-shear mixing to ... -
Spin transfer torque in Mn3Ga -based ferrimagnetic tunnel junctions from first principles
(2021)We report on first-principles calculations of spin-transfer torque (STT) in epitaxial magnetic tunnel junctions (MTJs) based on ferrimagnetic tetragonal Mn3Ga electrodes, both as analyzer in a Fe/MgO stack, and also in an ... -
Magnetic order and magnetotransport in half-metallic ferrimagnetic MnyRuxGa thin films
(2021)The ruthenium content of half-metallic Mn2RuxGa thin films, with a biaxially strained inverse Heusler structure, controls the ferrimagnetism that determines their magnetic and electronic properties. An extensive study of ... -
Neutron Imaging of Paramagnetic Ions: Electrosorption by Carbon Aerogels and Macroscopic Magnetic Forces
(2021)The electrosorption of Gd3+ ions from an aqueous 70 mM Gd(NO3)3 solution in monolithic carbon aerogel electrodes was recorded by dynamic neutron imaging. The aerogels have a bimodal pore size distribution consisting of ... -
Magnetic control over the fractal dimension of supramolecular rod networks
(2021)Controlling supramolecular polymerization is of fundamental importance to create advanced materials and devices. Here we show that the thermodynamic equilibrium of Gd3+-bearing supramolecular rod networks is shifted ... -
Detection of the Faraday Chiral Anisotropy
(2021)Being the intimate connection between chirality and magnetism, magneto-chiral anisotropies (MChA) - featuring non-reciprocal optical responses in chiral systems depending on the relative direction of the magnetic field B ... -
Reversible hydrogen control of antiferromagnetic anisotropy in α-Fe2O3
(2021)Antiferromagnetic insulators are a ubiquitous class of magnetic materials, holding the promise of low-dissipation spin-based computing devices that can display ultra-fast switching and are robust against stray fields. ... -
History of Magnetism and Basic Concepts
(Springer, Cham, 2021)Magnetism is a microcosm of the history of science over more than two millennia. The magnet allows us to manipulate a force field which has catalyzed an understanding of the natural world that launched three revolutions. ... -
Exfoliation of hematite: Morphological, structural and magnetic investigations
(2022)Three natural specimens of hematite are characterized using X-ray diffraction, magnetometry, IR/Raman and Mössbauer spectroscopy, with focus on the Morin transition. All are exfoliated by grinding and prolonged sonication ... -
Pauli paramagnetism of cubic V3Al, CrVTiAl, and related 18-electron Heusler compounds with a group-13 element
(2021)Calculations suggest that ordered Heusler alloys with 18 valance electrons could exhibit a variety of unusual electronic and magnetic states that are absent in the constituent elements. They include magnetic semiconductors, ... -
Ultrafast Double Pulse All-Optical Reswitching of a Ferrimagnet
(2021)All-optical reswitching has been investigated in the half-metallic Heusler ferrimagnet Mn2Ru0.9Ga, where Mn atoms occupy two inequivalent sites in the XA-type structure. The effect of a second 200 fs, 800 nm laser pulse ... -
Sub-picosecond exchange-relaxation in the compensated ferrimagnet Mn2RuxGa
(2021)We study the demagnetization dynamics of the fully compensated half-metallic ferrimagnet Mn2RuxGa. While the two antiferromagnetically coupled sublattices are both composed of manganese, they exhibit different temperature ... -
Magnetic reversal and pinning in a perpendicular zero-moment half-metal
(2021)Compensated ferrimagnets are promising materials for fast spintronic applications based on domain-wall motion as they combine the favorable properties of ferromagnets and antiferromagnets. They inherit from antiferromagnets ... -
Machine-learning semilocal density functional theory for many-body lattice models at zero and finite temperature
(2021)We introduce a machine-learning density-functional-theory formalism for the spinless Hubbard model in one dimension at both zero and finite temperature. In the zero-temperature case this establishes a one-to-one ... -
Reactivity of transition-metal alloys to oxygen and sulfur
(2021)Oxidation and tarnishing are the two most common initial steps in the corrosive process of metals at ambient conditions. These are always initiated with O and S binding to a metallic surface, so that one can use the ... -
Orbital Mott transition in two dimensional pyrochlore lattice
(2020)We study orbital Mott transition in two dimensional pyrochlore lattice, using a two orbital Hubbard model with only inter-orbital electronic hopping. We use a real space Monte Carlo based approach to study the model at ... -
Mott-Hubbard transition and spin-liquid state on the pyrochlore lattice
(2016)The pyrochlore lattice involves corner-sharing tetrahedra and the resulting geometric frustration is believed to suppress any antiferromagnetic order for Mott insulators on this structure. There are nevertheless short-range ... -
Spectroscopic signatures of the Mott transition on the anisotropic triangular lattice
(2014)We use a new Monte Carlo method to study the Mott transition on the anisotropic-triangular-lattice Hubbard model. Our real space approach accurately treats the emergence of non-trivial magnetic correlation in this frustrated ...
