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DTSTART:20070311T020000
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DTSTAMP:20260930T131325
DTSTART;TZID=America/Detroit:20261013T160000
DTEND;TZID=America/Detroit:20261013T170000
SUMMARY:Workshop / Seminar:CM-AMO Seminar | Magnetic and Electric Field Control of Nonlinear Photocurrents From Strongly Bound Excitons
DESCRIPTION:I will introduce the concept of the photogalvanic effect\, a nonlinear photocurrent generation mechanism allowed in noncentrosymmetric systems that is distinct from the ordinary photovoltaic effect observed at semiconductor interfaces. I will then discuss our recent experiments observing photogalvanic effects from strongly bound exciton states in a 2D magnetic system whereby inversion symmetry is dictated solely by the spin degree of freedom. Here\, both magnetic and electric fields can be used to control the photogalvanic effect and isolate it from linear photocurrents. The devices act as tunable helicity- and polarization-sensitive detectors with the capability to transduce deep sub-gap signals.
UID:149309-21906212@events.umich.edu
URL:https://events.umich.edu/event/149309
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Physics,Science
LOCATION:West Hall - 340
CONTACT:
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