General theory of spin-wave interactions
WebThe spin-wave theory in an ideal Heisenberg model of a ferromagnet is studied using Holstein and Primakoff's method including the spin-wave interactions. Several earlier … http://edu.itp.phys.ethz.ch/fs13/int/SpinChains.pdf
General theory of spin-wave interactions
Did you know?
WebFeb 27, 2009 · The spin-wave theory in an ideal Heisenberg model of a ferromagnet is studied using Holstein and Primakoff's method including the spin-wave interactions. Several earlier published results of the ... WebFeb 27, 2009 · This includes wavelengths of 1.3 and 1.5 μm, which are of particular interest for optical fiber communication systems. Since a single film can be used simultaneously as a waveguide for optical ...
Webpossible interactions: Heisenberg, Dzyaloshinskii-Moriya, anisotropic and general 3x3 exchange tensor; arbitrary single ion anisotropy tensor (easy-plane, easy-axis, etc.) ... Simulation of magnetic excitations in general commensurate and incommensurate magnetic structures using linear spin-wave theory; WebFeb 19, 2024 · We present a theory for the corresponding BLS cross section and explain our experimental findings by the combined influence of dipolar interactions and DMIs on the spin wave spectrum. Results Cubic chiral magnets with a helix period much larger than the crystal lattice constant ( λ >> a ) are characterized by a universal theory that is ...
WebAug 3, 2024 · Abstract. When the spacing between spins is small enough that the wave functions of the particles overlap, spins are coupled to each other through a quantum mechanical mechanism called the exchange interaction. In the simplest treatment of this interaction, spins are coupled only to their nearest neighbors, giving rise to what is … WebSep 14, 2024 · In this review, we trace the evolution of the quantum spin-wave theory treating non-collinear spin configurations. Non-collinear spin configurations are consequences of the frustration created by competing interactions. They include simple chiral magnets due to competing nearest-neighbor (NN) and next-NN interactions and …
WebJul 20, 2010 · In this chapter we describe a much more general method, due originally to Anderson, which is widely used to obtain results for many different systems. It is referred to as `spin-wave theory' as it ...
WebFeb 24, 2024 · The phase boundary is obtained from the condensation of magnons in linear spin wave theory about the collinear field-polarized ferromagnetic state. The condensation wave vector is indicated. The wave vector E v = ( − 2 3 , 0 , 0 ) is the one characteristic of the vortex and AF vortex phase, as in Ref. [ 82 ], which is indeed associated with a ... hot air balloon rides englandWebJun 17, 2004 · This leads to considerably more degeneracy in the spin‐wave spectrum than is predicted by the magnetic space group, the degeneracy being removed in real crystals by small interactions like dipole—dipole. Such groups have been constructed for common systems for use in evaluating the form of spin‐wave spectra, selection rules, etc. hot air balloon rides for 2WebMay 31, 2024 · Dirac gap in the spin-wave spectrum of the INS model parameters with deformed Heisenberg interaction J 1 ′ = J 1 − κ and Kitaev interaction K ′ = K + 3 κ at κ = 1 meV in the high-field regime at B = 1.5 B c 2 D. The spectrum is plotted along different momentum space cuts in panels (a)–(d). psychotherapeut neuwiedWebGeneral Theory of Spin-Wave Interactions. An ideal model of a ferromagnet is studied, consisting of a lattice of identical spins with cubic symmetry and with isotropic exchange … psychotherapeut neustrelitzpsychotherapeut nieder olmhttp://www.garfield.library.upenn.edu/classics1986/A1986D731200001.pdf hot air balloon rides eastern washingtonWebSep 14, 2024 · In this review, we trace the evolution of the quantum spin-wave theory treating non-collinear spin configurations. Non-collinear spin configurations are … psychotherapeut neuötting