Magnon decay
WebDec 14, 2024 · Magnon-phonon polarons have both the characteristics of magnons and phonons, i.e., spin information transfer, long lifetime [464], and mode degrees of freedom … WebSep 5, 2013 · We elucidate the role of magnon interaction and spontaneous decays in the spin dynamics of the triangular-lattice Heisenberg antiferromagnet by calculating its dynamical structure factor within the spin-wave theory. Explicit theoretical results for neutron-scattering intensity are provided for spins S= 1/2 and S=3/2.
Magnon decay
Did you know?
WebHence, the similarity between Fig. 8.4 (a) and (b) illustrates that the phenomenon of avoided decay is robust, i.e., it is not sensitive to small perturbations. Of course, the difference between an easy-plane and easy-axis anisotropy would affect low-energy properties. In contrast, magnon decay has experimentally been observed in a spin-2 TLHAF ... WebThe concept of a magnon was introduced in 1930 by Felix Bloch in order to explain the reduction of the spontaneous magnetization in a ferromagnet.
WebNov 13, 2006 · Instability of the excitation spectrum of an ordered noncollinear Heisenberg antiferromagnet with respect to spontaneous two-magnon decays is investigated. WebThe Magnomaly Cannon is a craftable post-Moon Lord launcher. When used, it fires a single exo rocket that homes in on enemies and has an invisible damaging aura …
WebDec 20, 2013 · In the magnon decay process, D (q, E q ) is the number of possible decay channels, with a single magnon at (q, E q ) decaying into two magnons with the kinematic constraint of E q = E k − E... WebSep 9, 2024 · The decay of the longitudinal mode is particularly pronounced at the zone center. To account for the many-body effects of the interacting low-energy modes in …
WebApr 3, 2024 · Spontaneous magnon decay is a generic feature of the magnetic excitations of anisotropic magnets and isotropic magnets with non-collinear order. In this paper, we argue that the effect of interactions on one-magnon states can, under many circumstances, be treated in terms of an effective, energy independent, non-Hermitian Hamiltonian for …
WebAug 27, 2024 · As reflected by the observed finite lifetime of the magnon BEC [8, 27], the magnon BEC is a metastable state with respect to thermal activations or decay to the excited states [30, 31]. This causes lower and upper limits of the magnon density required to form and destroy a magnon BEC, respectively. rajallisesti verovelvollinenWebMay 4, 2016 · In the longitudinal SSE configuration 17, 18, 19, a vertical temperature gradient in YIG drives a magnon current. In the steady state, magnon flow towards the TI/YIG interface is balanced by... cycle time compressionWebThe Magnomaly Cannon is a craftable post-Moon Lord launcher. When used, it fires a single exo rocket that homes in on enemies and has an invisible damaging aura surrounding it. … rajallinen englanniksiWebApr 5, 2024 · We use a pure spin current originating from the spin Hall effect to generate a spin-orbit torque (SOT) strongly reducing the effective damping in an adjacent ferromagnet. Due to additional microwave excitation, large spin-wave amplitudes are achieved exceeding the threshold for 4-magnon scattering, thus resulting in additional spin-wave signals at … rajalta rajalle hiihtoWebApr 3, 2024 · Abstract: Spontaneous magnon decay is a generic feature of the magnetic excitations of anisotropic magnets and isotropic magnets with non-collinear order. In this … cycle the camino de santiagoWebAug 3, 2012 · We show that due to the symmetry of the three-magnon coupling, the decay rate is linear in ΔH=(Hc−H)in the vicinity of the threshold field Hcinstead of the steplike Γk=0∝ΘΔHexpected from the two-dimensional character of magnon excitations in … rajalta hiihtoWebMay 5, 2024 · Compared with the non-interacting linear spin-wave theory, our results demonstrate a variety of phenomena including field-induced renormalization of one-magnon dispersion, spontaneous magnon decay observed via intrinsic linewidth broadening, unusual non-Lorentzian two-peak structure in the excitation spectra, and a dramatic shift … rajalta rajalle