Research Seminars @ Illinois

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Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

To have your events added or removed from this calendar, please contact OUR at ugresearch@illinois.edu

The Anthony J Leggett Institute for Condensed Matter Physics Seminar: "Topo-photovoltaics"

Event Type

Seminar/Symposium

Sponsor

Physics Department

Location

ESB 190

Date

Nov 4, 2024 12:00 pm

Speaker

Aris Alexandradinata, University of California Santa Cruz

Contact

Stephen Bullwinkel

E-Mail

bullwink@illinois.edu

Phone

217-333-1652

Views

213

Originating Calendar

Physics - The Anthony J Leggett Institute for Condensed Matter Theory Seminar

In non-centrosymmetric materials, light induces real-space shifts of quasiparticles which result in a photovoltaic current. Such shifts arise from all dynamical, far-from-equilibrium, kinetic processes, including photo-excitation, intraband relaxation and interband recombination. These shifts are enhanced by the twisting of electronic wavefunctions in momentum space; such twisting is characterized by the well-known intra-band Berry phase and the less-known inter-band Berry phase. Wave-function-enhanced photovoltaic currents can be utilized as an unprecedented phenomenological framework to faithfully diagnose topological materials, as I will exemplify with BiTeI.

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