Self-consistent determination of the key spin-transfer torque parameters from spin-wave Doppler experiments

Magnetic properties of spin waves in thin yttrium iron garnet films

“…The experimental setup is conventional TRMOKE, where the Kerr signal is proportional to the dynamic out-of-plane magnetization component (polar MOKE) [31]. The light source is a pulsed titanium sapphire laser operating at a central wavelength λ c = 830 nm.…”

Symmetry and curvature effects on spin waves in vortex-state hexagonal nanotubes

“…Because of their peculiar linear and nonlinear characteristics, SWs promise great potential in information transport and processing such as the magnon transistor [2] and the magnonic diode [3] for multifunctional spin-wave logic applications. Spin waves (including the spatially uniform ferromagnetic resonance precession) have also been proven to be an excellent tool to probe the magnetic characteristics of solids as they are sensitive to spin currents [4][5][6], impurities [7][8][9], crystal anisotropies [10], or asymmetric ex-* l.koerber@hzdr.de change interactions, among others. For example, the presence of an asymmetric interaction such as the Dzyaloshinskii-Moriya interaction (DMI) leads to an asymmetric dispersion and consequently to a nonreciprocal propagation of spin waves therein [11][12][13][14][15][16][17][18][19][20][21].…”

Excitation and tailoring of diffractive spin-wave beams in NiFe using nonuniform microwave antennas

“…We note that here one is not interested in the absolute phase as long as it remains constant. Given by the optical detection limit of the microscope employed wave numbers up to approximately 9 μm −1 [14,28,29] could be detected as indicated by the gray-shaded area in Fig. 1(c).…”

“…In the resulting Kerr images, the position of the nonuniform microwave antenna was extracted from the corresponding topography image of the sample which was acquired simultaneously and contained information about the local sample reflectivity. Due to the amplitude nonreciprocity inherently present when exciting SWs by CPWs [28,30,31] we focused on the side of the antenna where the SW amplitude was larger at a given field direction.…”