Colloquium: Domain Walls and Vortices Dynamics for Spintronics

Domain walls and vortices are the focus of this week's colloquium. Image courtesy of Kanijoman, Flickr.

Domain walls and vortices are the focus of this week’s colloquium. Image courtesy of Kanijoman, Flickr.

We are pleased to invite you to the Skoltech Colloquium.

This week our guest lecturers are professors Zvezdin and Prokhorov of General Physics Institute, Moscow who will discuss issues related to “Domain walls and vortices dynamics for Spintronics.”

When: April 2, 4 pm

What: Domain walls and vortices dynamics for spintronics.

Who: K.A.Zvezdin, A.M.Prokhorov General Physics Institute, Moscow, Russia

Where:  Moscow School of Management, Beijing-2 Auditorium – China cluster

Abstract: Spintronic devices based on the controlled dynamics of domain walls (DW) and vortices have attracted great attention from physicists and engineers in the context of the development of energy-efficient components for nanoelectronics. In this talk I will review our recent modeling [1,2] and experimental results [3,4] on the DW dynamics in ferromagnetic nanostripe excited by spin-polarized current injected perpendicular-to-the-plane. The concept of a logical element based on these effects will be presented. The opportunities and benefits of the domain walls control in spintronic devices by the charge-less spin current will be discussed. The second part of the talk will be devoted to the vortex dynamics in MTJ nanopillars. I will discuss possible ways to increase the output power and to improve spectral characteristics [5] of these structures in order to enable real-life vortex-based microwave applications, such as microwave generators and detectors.
References:
1. Khvalkovskiy, A.V., Zvezdin, et al, High domain wall velocities due to
spin currents perpendicular to the plane (2009) Physical Review Letters, 102 (6), art. no. 067206

2. Skirdkov P.N., Zvezdin K.A., et al., Domain wall displacement by remote spin-current injection (2014) Appl.Phys.Lett, 104, 24

3. Chanthbouala, K.A.Z. et al., Vertical-current-induced domain-wall motion in MgO-based magnetic tunnel junctions with low current densities (2011) Nature Physics, 7 (8), pp. 626-630. DOI: 10.1038/nphys1968

4. Metaxas, K.A.Z., et al., High domain wall velocities via spin transfer torque using vertical current injection, (2013) Scientific Reports, 3, art. no. 1829

5. Dussaux, A., K.A.Z., et al.,  A. Large microwave generation from
current-driven magnetic vortex oscillators in magnetic tunnel junctions (2010) Nature Communications, 1, p.8,

We are looking forward to seeing you.

If you like to participate and for further information or questions, please Liliya Abaimova
We look forward to seeing you.

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