Inna Vishik: Electronic Correlations and Topology across Tc in a Magnetic Weyl Semimetal

Event Date:
2022-03-10T10:00:00
2022-03-10T11:00:00
Event Location:
https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09
Speaker:
Inna Vishik - Associate Professor in Physics and Astronomy at UC Davis
URL:
https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09
Related Upcoming Events:
Condensed Matter Seminars
Intended Audience:
Graduate
Event Information:

https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09
Meeting ID: 684 7017 3961
Passcode: 113399

Speaker: Inna Vishik - Associate Professor in Physics and Astronomy at UC Davis 

Abstract: Co3Sn2S2 is a magnetic Weyl semimetal below its Curie temperature (Tc) of 177K. I will discuss our recent spatial and temperature-dependent angle-resolved photoemission spectroscopy (ARPES) studies in this system.  Across Tc, we observe signatures of a topological phase transition, but also observe changes in bulk bands which are inconsistent with a simple lifting of exchange interactions, suggesting enhanced electronic correlations in the regime without long-range magnetic order.  I will also discuss spatial-dependent microARPES data which quantify the characteristic differences between Sn- and S- terminated surfaces.

Ref: Rossi, Ivanov, et al, PRB 104, 155115 (2021)

Bio:  Inna Vishik is an Associate Professor in Physics and Astronomy at UC Davis.  Since 2016, her lab has been performing ARPES and ultrafast optics experiments to elucidate emergent phenomena in superconducting, correlated, and topological quantum materials.  Prior to this, she received her PhD at Stanford and was subsequently a Pappalardo Postdoctoral fellow at MIT.

 

 

Add to Calendar 2022-03-10T10:00:00 2022-03-10T11:00:00 Inna Vishik: Electronic Correlations and Topology across Tc in a Magnetic Weyl Semimetal Event Information: https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09 Meeting ID: 684 7017 3961 Passcode: 113399 Speaker: Inna Vishik - Associate Professor in Physics and Astronomy at UC Davis  Abstract: Co3Sn2S2 is a magnetic Weyl semimetal below its Curie temperature (Tc) of 177K. I will discuss our recent spatial and temperature-dependent angle-resolved photoemission spectroscopy (ARPES) studies in this system.  Across Tc, we observe signatures of a topological phase transition, but also observe changes in bulk bands which are inconsistent with a simple lifting of exchange interactions, suggesting enhanced electronic correlations in the regime without long-range magnetic order.  I will also discuss spatial-dependent microARPES data which quantify the characteristic differences between Sn- and S- terminated surfaces. Ref: Rossi, Ivanov, et al, PRB 104, 155115 (2021) Bio:  Inna Vishik is an Associate Professor in Physics and Astronomy at UC Davis.  Since 2016, her lab has been performing ARPES and ultrafast optics experiments to elucidate emergent phenomena in superconducting, correlated, and topological quantum materials.  Prior to this, she received her PhD at Stanford and was subsequently a Pappalardo Postdoctoral fellow at MIT.     Event Location: https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09