Magnetic Quasiparticles Beyond Skyrmions
Comprehensive Exam
4:00 pm –
5:00 pm
Jorgensen Hall
Contact:
Physics Department, (402) 472-2770, paoffice@unl.edu
Gautam Gurung will present his comprehensive exam topic, “Magnetic Quasiparticles Beyond Skyrmions”
Zoom Meeting: https://unl.zoom.us/j/95498227121 (Meeting ID: 954 9822 7121)
Abstract: Magnetic skyrmions are topologically protected noncollinear magnetic configurations in the ferromagnetic background. These nontrivial magnetic textures can be used as a carrier of information in the ultradense, smaller and stable future memory devices. But they are characterised by the emergent magnetic phenomenon like skyrmion Hall effect. This is one of the main reasons limiting the use of skyrmions in memory devices. The manipulation of the magnetic configuration of skyrmions or combination of two or more skyrmions or magnetic excitations in antiferromagnetic/ferrimagnetic background extend the field of the magnetic textures beyond skyrmions. These new magnetic quasiparticles opened the possibility of exploring many new topologically nontrivial objects which can be used in the future memory devices. Magnetic quasiparticles due to its topological differences may eliminate the skyrmion Hall effect encountered in the skyrmions under the effect of the spin orbit torque. These alternative quasiparticles are theoretically predicted and most of them are observed experimentally. The topological characteristics and the dynamics of the new magnetic quasiparticles will be discussed.
Zoom Meeting: https://unl.zoom.us/j/95498227121 (Meeting ID: 954 9822 7121)
Abstract: Magnetic skyrmions are topologically protected noncollinear magnetic configurations in the ferromagnetic background. These nontrivial magnetic textures can be used as a carrier of information in the ultradense, smaller and stable future memory devices. But they are characterised by the emergent magnetic phenomenon like skyrmion Hall effect. This is one of the main reasons limiting the use of skyrmions in memory devices. The manipulation of the magnetic configuration of skyrmions or combination of two or more skyrmions or magnetic excitations in antiferromagnetic/ferrimagnetic background extend the field of the magnetic textures beyond skyrmions. These new magnetic quasiparticles opened the possibility of exploring many new topologically nontrivial objects which can be used in the future memory devices. Magnetic quasiparticles due to its topological differences may eliminate the skyrmion Hall effect encountered in the skyrmions under the effect of the spin orbit torque. These alternative quasiparticles are theoretically predicted and most of them are observed experimentally. The topological characteristics and the dynamics of the new magnetic quasiparticles will be discussed.