Physics and Astronomy Calendar

Week of Monday, July 22nd 2019


Friday, July 26th 2019
Speaker: Evan Moen
This is Evan Moen's PhD Thesis Defense. His advisor is Oriol Valls
12:30 pm:
Speaker: Dr. Cosimo Gorini Institut für Theoretische Physik Universität Regensburg
Subject: A non-Abelian gauge theory approach to (pseudo) spin-charge coupled transport

Spin-orbit coupling heavily influences the dynamics of charge carriers in a solid, where its effective strength can be enhanced by orders of magnitude as compared to the vacuum. Remarkable consequences are phenomena such as the spin Hall and inverse spin galvanic (or Edelstein) effects, where spin currents and polarizations are generated by purely electrical means. The complexities of spin-charge coupled dynamics can be described within a non-Abelian gauge theory approach, based on Keldysh non-equilibrium formalism. A symmetric treatment of spin and charge degrees of freedom removes ambiguities related to spin non-conservation in the presence of spin-orbit and exchange couplings and yields a physically transparent picture. Furthermore, the non-Abelian language treats on the same footing standard spin-orbit interaction in solid state systems and exotic forms of (pseudo) spin-orbit coupling which arise, or can be engineered, in different contexts.

Faculty Host: Alex Kamenev
8:30 pm:
Universe in the Park in Cedar Creek Ecosystem Science Reserve
Presentations are held rain or shine from 8:30 to 10:00 or 11:00pm, including telescope observing.

Saturday, July 27th 2019
8:30 pm:
Universe in the Park in William O'Brien State park
Presentations are held rain or shine from 8:30 to 10:00 or 11:00pm, including telescope observing.

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