<< February 2015 >>
 
 >>
 >>
 >>
 >>
Sun Mon Tue Wed Thu Fri Sat
 1   2   3   4   5   6   7 
 8   9   10   11   12   13   14 
 15   16   17   18   19   20   21 
 22   23   24   25   26   27   28 
 
Add an Event Edit This Event

This Week at Physics

<< Fall 2014 Spring 2015 Fall 2015 >>
Subscribe to receive email announcements of events

Event Number 3628

  Thursday, February 12th, 2015

R. G. Herb Condensed Matter Seminar
Faculty Candidate Seminar
Spin orbit interaction induced magnetic dynamics
Time: 4:00 pm
Place: 474 Chamberlin Hall
Speaker: Luqiao Liu, IBM TJ Watson Research Center
Abstract: Controlling magnetic orientation in a fast and energy-efficient way is both fundamentally important and has profound technical implications. Conventional ways of switching magnetic moment include employing magnetic fields from current-carrying coil and using the spin transfer torque effect from spin valve structures. Recent studies show that spin orbit interaction induced phenomena, such as the spin Hall effect and spin momentum locking in topological insulators, can provide effective mechanisms to generate spin currents and to control the orientation of nano-magnets. In this talk, I will discuss various magnetic dynamics that can be excited using spin orbit interactions, including ferromagnetic resonance, reversible magnetic switching and persistent magnetic oscillations. Compared with conventional spin torque devices, a higher current-spin conversion efficiency and lower energy dissipation are exhibited in those experiments. Besides, I will also talk about experimental approaches that can be utilized to identify the origin and quantify the strength of those effects. With the information gained in those studies, further improvement on the spin generation efficiency can be expected.
Host: Coppersmith
Add this event to your calendar

©2013 Board of Regents of the University of Wisconsin System