– The problem of quantum criticality in the context of itinerant ferroor metamagnetism has received considerable attention [S. A. Grigera et. al., Science 294, 329 (2001); C. Pfleiderer et. al., Nature, 414, 427 (2001)]. It has been proposed that a new kind of quantum criticality is realised in materials such as MnSi or Sr2Ru2O7. We show based on a mean-field theory that the low-temperature beh...

Ferromagnetic resonance experiment was performed to study the magnonic modes of an antidot lattice nanopatterned in a sputtered Co 2 MnSi Heusler alloy thin film. The crystal prepared with Ga + focused ion beam, and micromagnetic simulations were used explain qualitatively quantitatively complex experimental spin waves spectrum. We demonstrate necessity consider geometrical imperfections modifi...

We have systematically investigated the spin-orbit torque (SOT)-induced effective magnetic field in a structure consisting of Ta heavy metal layer and an antiferromagnetically coupled Mn 1.8 Ga xmlns:xlink="http://www.w3.org/1999/xlink">1 /Co xmlns:xlink="http://www.w3.org/1999/xlink">2</s...

We present a comprehensive investigation of the evolution helimagnetic correlations in Mn$_{1-x}$Fe$_x$Si with increasing doping. By combining polarised neutron scattering and high resolution Neutron Spin Echo spectroscopy we investigate three samples $x$=0.09, 0.11 0.14, i.e. compositions on both sides concentration $x^* \sim 0.11$ where Bragg peaks disappear between $x^*$ quantum critical $x_...