Wednesday Colloquia

Topological Spin Textures in Magnets

by Prof. Mohit Randeria (Ohio State University)

Wednesday, July 17, 2019 from to (Asia/Kolkata)
at Lecture Theatre ( AG-66 )
Skyrmions are topological solitons that were first discussed in quantum field theory in the 1960's. In recent years, through a series of beautiful experimental developments, they have become of great relevance to a variety of condensed matter systems, especially chiral magnetic materials. 

I will begin with a pedagogical introduction to skyrmions and explain how these topological spin textures arise in magnetic materials with broken inversion symmetry and spin-orbit coupling. I will next describe a variety of experiments that probe magnetic skyrmions, emphasizing their unusual properties and potential for applications in magnetic memories. I will conclude with some of our recent theoretical work on the stability of skyrmions in chiral magnets.