Diffusive Spin Dynamics in Ferromagnetic Thin Films with a Rashba
... perpendicular switching field generating the in-plane torque is about 100 mT, which agrees with the estimation in Ref. [9]. In the case of magnetic domain walls, the present torque acts like a transverse field that can increase the Walker breakdown limit and enhance the range for the nonadiabatic cu ...
... perpendicular switching field generating the in-plane torque is about 100 mT, which agrees with the estimation in Ref. [9]. In the case of magnetic domain walls, the present torque acts like a transverse field that can increase the Walker breakdown limit and enhance the range for the nonadiabatic cu ...
L-5: Thermodynamics of Mixtures (Chapter 7)
... QV is the activation energy energy required to form a single vacancy T is the absolute temperature k = R/NA = 1.38x10-23J/atom.K = 8.62x10-5eV/atom.K is the Boltzmann constant R is the gas constant (8.314 J/mol.K) NA is Avogadro’s number (6.02x1023atom/mol) • An electron volt, eV, is the energy ac ...
... QV is the activation energy energy required to form a single vacancy T is the absolute temperature k = R/NA = 1.38x10-23J/atom.K = 8.62x10-5eV/atom.K is the Boltzmann constant R is the gas constant (8.314 J/mol.K) NA is Avogadro’s number (6.02x1023atom/mol) • An electron volt, eV, is the energy ac ...
NEW HINTS FROM THEORY FOR PUMPING SPIN CURRENTS IN
... of Chern numbers. Later it was found that nonlinear systems can give raise to oneparameter forms of pumping and in this case the quantization of the pumped charge does not occur. L. Foa Torres [5] predicted the one-parameter pumping from a non-linear system consisting of a ring pierced by a magnetic ...
... of Chern numbers. Later it was found that nonlinear systems can give raise to oneparameter forms of pumping and in this case the quantization of the pumped charge does not occur. L. Foa Torres [5] predicted the one-parameter pumping from a non-linear system consisting of a ring pierced by a magnetic ...
Spin-density wave in a quantum wire
... is unexpectedly strong in these systems, with the spin-orbit energy splitting of the order of 100 meV. In fact, spin-split subbands of Rashba type have been observed in angular resolved photoemission spectroscopy (ARPES) in both two-dimensional (LaShell et al. 1996) and one-dimensional settings (Mug ...
... is unexpectedly strong in these systems, with the spin-orbit energy splitting of the order of 100 meV. In fact, spin-split subbands of Rashba type have been observed in angular resolved photoemission spectroscopy (ARPES) in both two-dimensional (LaShell et al. 1996) and one-dimensional settings (Mug ...
Effect of Spin-Orbit Interaction and In
... 共5兲 is illustrated in Figs. 1共a兲–1共c兲 for various values of . Recently, similar energy-spectrum calculations have been reported in Ref. 29. It is interesting to note some of the properties of these sub-bands. In the case of equal to 0, Fig. 1共c兲, or /4, Fig. 1共b兲, a gap appears at p⫽0 between tw ...
... 共5兲 is illustrated in Figs. 1共a兲–1共c兲 for various values of . Recently, similar energy-spectrum calculations have been reported in Ref. 29. It is interesting to note some of the properties of these sub-bands. In the case of equal to 0, Fig. 1共c兲, or /4, Fig. 1共b兲, a gap appears at p⫽0 between tw ...
Effects of Toxic Materials
... Magnetic Seperation-the ore is passed over a drum inside which there is a magnet which is stationery. The magnetic material will be carried on further than the non-magnetic and therefore will be seperated. Hydrometallurgy- uses aqueous solutions called leaches to serperate metals from ...
... Magnetic Seperation-the ore is passed over a drum inside which there is a magnet which is stationery. The magnetic material will be carried on further than the non-magnetic and therefore will be seperated. Hydrometallurgy- uses aqueous solutions called leaches to serperate metals from ...
Notes for Classical/Semi-Classical/Quantum Outline of Basic NMR
... • dipole-dipole interactions with other nuclei – generally dominant mechanism in solution; most important for I = 1/ 2 nuclei with nearby protons • chemical shift (or shielding) anisotropy – molecular tumbling of a nonspherical distribution of electron density causes the local magnetic field acting ...
... • dipole-dipole interactions with other nuclei – generally dominant mechanism in solution; most important for I = 1/ 2 nuclei with nearby protons • chemical shift (or shielding) anisotropy – molecular tumbling of a nonspherical distribution of electron density causes the local magnetic field acting ...
SOLID STATE
... tetravalent Si or Ge this leads to the formation of a Positive hole or electron deficient centre which conducts electricity hence known as p-type of conductor. 12-16 Compounds: When a solid state compound is formed by combination of elements of group 12 and 16 the compounds are called 12 -16 compo ...
... tetravalent Si or Ge this leads to the formation of a Positive hole or electron deficient centre which conducts electricity hence known as p-type of conductor. 12-16 Compounds: When a solid state compound is formed by combination of elements of group 12 and 16 the compounds are called 12 -16 compo ...
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.