University of Cambridge > Talks.cam > Theory of Condensed Matter > Quantized optical responses in chiral insulators and metals

  Browse A-Z

Log in

Googledetails Microsoftdetails

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹ️ Information

Quantized optical responses in chiral insulators and metals

Download to your calendar using vCal

If you have a question about this talk, please contact Katarzyna Macieszczak .

In this talk I will discuss how optical experiments can measure quantized observables, determined solely by fundamental constants. I will discuss two effects triggered by circular polarized light: circular dichroism, and the circular photogalvanic effect. The former is a linear response that is quantized in higher order topological insulators with chiral hinge modes. The latter is a non-linear response that is quantized in Weyl semimetals where all mirror symmetries are broken. I will discuss how these probes can be used to distinguish these phases from trivial states, and some of the subtleties to interpret experiments capable of measuring them.

This talk is part of the Theory of Condensed Matter series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

MR9/Zoom: https://cam-ac-uk.zoom.us/j/87869493842?pwd=vGeCJJgQZa8PwZOhk1kpE0nbj6DgpJ.1 CARET Educational Technology Seminar Online meeting link tbc in the Abstract

Other talks

How Much Does Homology Really Know? Haematology and Palliative Care Title to be confirmed Unveiling the curtain with ukubuyisa or go lata: complicated roles of museums and nation states in the cultural repatriation discourse and practice in southern Africa Title to be confirmed  Life, death, and the discovery of PDAR: the Pol II Degradation-dependent Apoptotic Response 
 

© 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity