Polarized neutron scattering study of the centrosymmetric skyrmion host material <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Gd</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>PdSi</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Polarized Neutron Scattering

Skyrmion-skyrmion Scattering

We study the scattering of Skyrmions at low energy and large separation using the method proposed by Manton of truncation to a finite number of degree freedom. We calculate the induced metric on the manifold of the union of gradient flow curves, which for large separation, to first non-trivial order is parametrised by the variables of the product ansatz.

Magnetoelectric effects in the skyrmion host material Cu2OSeO3

Insulating helimagnetic Cu2OSeO3 shows sizeable magnetoelectric effects in its skyrmion phase. Using magnetization measurements, magneto-current analysis and dielectric spectroscopy, we provide a thorough investigation of magnetoelectric coupling, polarization and dielectric constants of the ordered magnetic and polar phases of single-crystalline Cu2OSeO3 in external magnetic fields up to 150 m...

Second-Harmonic Rayleigh Scattering from a Sphere of Centrosymmetric Material

We describe the electromagnetic theory of second-harmonic generation from the surface of a sphere that is small compared to the wavelength of light. In a leading-order expansion, the second-harmonic radiation is emitted in nonlocally excited electric dipole and locally excited electric quadrupole modes. We analyze the problem with particular emphasis on experimental aspects, such as the radiati...

Polarized neutron scattering study on antiferromagnetic states in CeRh0.6Co0.4In5

Polarized neutron scattering experiments were performed on mixed compound CeRh0.6Co0.4In5 to clarify the nature of the lowtemperature ordered states. Three nonequivalent Bragg peaks, characterized by the wave vectors of qh ∼ (1/2, 1/2, 0.3), q1 ∼ (1/2, 1/2, 0.4) and qc = (1/2, 1/2, 1/2), were observed at 1.4 K. These Bragg peaks are found to occur entirely in spin-flip channel. This indicates t...