Magnetic-Instability-Induced Giant Magnetoelectric Coupling
... induced by hole/electron doping, temperature, magnetic field, pressure, and/or lattice strain. For the first time we here show that spin-state transitions can also be induced by an electric field in the case of magnetoelectric materials that display magnetic instabilities. Materials with pure ionic ...
... induced by hole/electron doping, temperature, magnetic field, pressure, and/or lattice strain. For the first time we here show that spin-state transitions can also be induced by an electric field in the case of magnetoelectric materials that display magnetic instabilities. Materials with pure ionic ...
Spin and its applications - beim Quantum Spin
... making a measurement, the particle is in a “superposition state”, in this case of possible states of spin. Only when we make a measurement, the atom (or the particle more in general) appears in a precise spin state, i.e. up or down in a certain direction: we have made a measurement and the “superpos ...
... making a measurement, the particle is in a “superposition state”, in this case of possible states of spin. Only when we make a measurement, the atom (or the particle more in general) appears in a precise spin state, i.e. up or down in a certain direction: we have made a measurement and the “superpos ...
Protein Structure Determined by NMR
... which originate from the interaction of all protons of a spin system that are not directly connected via three chemical bonds. Thus a characteristic pattern of signals results for each amino acid from which the amino acid can be identified ...
... which originate from the interaction of all protons of a spin system that are not directly connected via three chemical bonds. Thus a characteristic pattern of signals results for each amino acid from which the amino acid can be identified ...
Spin Density Functional Based Search for Half
... This pair was chosen in the anticipation that differing charge states [Cr2+ ,Fe4+ : d4 , d4 ] might result, leading to either an S=2 pair or an S=1 pair. However, charge differentiation did not occur. Two distinct solutions for antialigned moments have been obtained, one has high spin Fe (4 µB ) par ...
... This pair was chosen in the anticipation that differing charge states [Cr2+ ,Fe4+ : d4 , d4 ] might result, leading to either an S=2 pair or an S=1 pair. However, charge differentiation did not occur. Two distinct solutions for antialigned moments have been obtained, one has high spin Fe (4 µB ) par ...
Magnetic order from molecular oxygen anions Riyadi, Syarif
... and memory devices [5–7]. Transition metals are chosen due to their high spin polarization and high electron density at the Fermi level (conductivity). Magnetism in transition metal elements originates from unpaired electrons in the 3d orbitals. Fascinating properties spanning from the simplest mech ...
... and memory devices [5–7]. Transition metals are chosen due to their high spin polarization and high electron density at the Fermi level (conductivity). Magnetism in transition metal elements originates from unpaired electrons in the 3d orbitals. Fascinating properties spanning from the simplest mech ...
Helimagnetic structure of YMn2 observed by means of nuclear
... We may conclude that the magnetic ordering of YMn2 is realized when the energy gain due to the partial release of the frustration overcomes the loss of elastic energy associated with the symmetry lowering in the crystal. In addition, this means that there is strong magnetocrystalline (magnetovolume) ...
... We may conclude that the magnetic ordering of YMn2 is realized when the energy gain due to the partial release of the frustration overcomes the loss of elastic energy associated with the symmetry lowering in the crystal. In addition, this means that there is strong magnetocrystalline (magnetovolume) ...
The spin Hall effect
... Natural generalization of the Hall effect and quantum Hall effect. • Natural extensions of the spin Hall effect: orbitronics, spintronics without Spin injection and spin detection, quantum spin Hall effect. • Need close interaction among theory, experiments and materials science. • Frontier of scien ...
... Natural generalization of the Hall effect and quantum Hall effect. • Natural extensions of the spin Hall effect: orbitronics, spintronics without Spin injection and spin detection, quantum spin Hall effect. • Need close interaction among theory, experiments and materials science. • Frontier of scien ...
Surface charge transport in topological insulators
... Theorem says fermions come in pairs – pair on other surface In practice in a TI slab all surfaces have TI states This can be a problem when looking at e.g. Hall transport ...
... Theorem says fermions come in pairs – pair on other surface In practice in a TI slab all surfaces have TI states This can be a problem when looking at e.g. Hall transport ...
Learning station IX : Spin and its applications - Quantum Spin-Off
... This weird effect is a quantum mechanical phenomenon which cannot be understood with classical physics. ...
... This weird effect is a quantum mechanical phenomenon which cannot be understood with classical physics. ...
NMR -Lecture-SOS. ppt - University at Buffalo
... indivdual amino acids. Proton resonances are often resolved by differences in chemical shifts. • Measure intra-residue and inter-residue proton to proton distances through dipolar couplings. • Measure torsion angles through J-couplings. • Use distance and torsion angle constraints to determine secon ...
... indivdual amino acids. Proton resonances are often resolved by differences in chemical shifts. • Measure intra-residue and inter-residue proton to proton distances through dipolar couplings. • Measure torsion angles through J-couplings. • Use distance and torsion angle constraints to determine secon ...
Geometrical frustration
In condensed matter physics, the term geometrical frustration (or in short: frustration) refers to a phenomenon, where atoms tend to stick to non-trivial positions or where, on a regular crystal lattice, conflicting inter-atomic forces (each one favoring rather simple, but different structures) lead to quite complex structures. As a consequence of the frustration in the geometry or in the forces, a plenitude of distinct ground states may result at zero temperature, and usual thermal ordering may be suppressed at higher temperatures. Much studied examples are amorphous materials, glasses, or dilute magnets.The term frustration, in the context of magnetic systems, has been introduced by Gerard Toulouse (1977). Indeed, frustrated magnetic systems had been studied even before. Early work includes a study of the Ising model on a triangular lattice with nearest-neighbor spins coupled antiferromagnetically, by G. H. Wannier, published in 1950. Related features occur in magnets with competing interactions, where both ferro- as well as antiferromagnetic couplings between pairs of spins or magnetic moments are present, with the type of interaction depending on the separation distance of the spins. In that case commensurability, such as helical spin arrangements may result, as had been discussed originally, especially, by A. Yoshimori, T. A. Kaplan, R. J. Elliott, and others, starting in 1959, to describe experimental findings on rare-earth metals. A renewed interest in such spin systems with frustrated or competing interactions arose about two decades later, beginning in the 70s of the 20th century, in the context of spin glasses and spatially modulated magnetic superstructures. In spin glasses, frustration is augmented by stochastic disorder in the interactions, as may occur, experimentally, in non-stoichiometric magnetic alloys. Carefully analyzed spin models with frustration include the Sherrington-Kirkpatrick model, describing spin glasses, and the ANNNI model, describing commensurability magnetic superstructures.