Joshua Turner (SIMES Friday Seminar)

Date(s) - May 10 2013
11:00 AM - 12:30 PM

Shasta Room, Bldg 40, Room 361


Orbital effects in quantum materials: the case of the manganites

Josh Turner

Staff Scientist, Soft X-ray Department

Linac Coherent Light Source

Orbital ordering, the phenomenon where specific electron wavefunctions tend to order and form regular patterns throughout a crystal, may be one of the most interesting issues in strongly correlated electron systems as it may hold the key to understanding unusual effects, such as colossal magnetoresistance. The nature of this order parameter must be understood both theoretically and experimentally in order to alter, and then harness, the competing interactions in these types of materials. We will look at dynamics of orbital order — equilibrium fluctuations, and both optically-induced and THz-pumped dynamics — and how these observations can help us illuminate the orbital coupling to other mechanisms. We will also discuss some novel developments that make future work in this area extremely compelling.