Spin Wave Confinement

Sergej O. Demokritov is a leading expert in the field of spin-wave control and excitation using spintronic and magnonic concepts. His main scientific interests lie in the dynamics of magnetic nanosystems, quantum thermodynamics, magnetic memory, sensorics, and high-frequency signal processing. He received his PhD from the Kapitsa Institute for Physical Problems, Moscow. After postdoctoral research at the Jülich Research Center, Germany, with Prof. P. Grünberg (Nobel Prize in Physics, 2007), he established his own group at the University of Münster, Germany, in 2004. Prof. Demokritov is known for his discovery in 2006 of Bose–Einstein condensation of magnons at room temperature and his recent work on spin-wave control by spin currents. Since 2014, he is head of the Quantum Spintronics lab in Yekaterinburg, Russia.

Graded magnonic index and spin-wave Fano resonances. Coupled spin waves in magnonic waveguides. Tuning of the spin-wave bands in nanostructures. Magnetization dynamics of Reconfigurable 2D magnonic crystals. Spin-wave optics in patterned garnet. Spin waves in circular and linear chains. Magnonic grating coupler effect. Spin waves on spin structures: topology, localization, and nonreciprocity. Steering of confined spin waves by local magnetic fields and domain walls. Current-induced spin-wave Doppler shift. Control of propagating spin waves by spin currents. Propagating spin waves in nano-contact spin torque oscillators. Parametric excitation and amplification of propagating spin waves by voltage-controlled magnetic anisotropy.