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Condensed Matter Physics Seminar - Søren Ulstrup

Science and Information Technology

This is part of a virtual seminar series in theoretical condensed matter and atomic physics, with the aim to connect researchers working at different Nordic universities. This seminar by Søren Ulstrup from Aarhus University is titled "Measuring Many-Body Effects in Operating Devices with nanoARPES".

Seminar
Date
7 Mar 2022
Time
13:15 - 14:15
Location
Digitally via Zoom

Søren Ulstrup: Measuring Many-Body Effects in Operating Devices with nanoARPES

Abstract

The charge carrier-dependent spectral function underpins the electronic and optical properties of materials. Here, I will demonstrate the powerful concept of unifying spectroscopic and transport measurements of the energy- and momentum-dependent spectral function using angle-resolved photoemission spectroscopy with nanoscale spatial resolution (nanoARPES). I will show that this technique allows for a noninvasive local measurement of composition, structure, many-body effects and carrier mobility of devices composed of two-dimensional heterostructures in the presence of high current densities and tunable charge carrier concentrations [1,2,3]. Future opportunities for the experiments will be discussed. 

[1] R. Muzzio et al. Phys. Rev. B 101, 201409(R) (2020) 

[2] D. Curcio et al. Phys. Rev. Lett 125, 236403 (2020)

[3] Nguyen et al. Nature 572, 220 (2019)

The seminar is held digitally via Zoom

Zoom-link: https://nordita.org/zoom/nvcms

Read more about the seminar series

Condensed Matter Physics Seminar