Photoelectron dispersion in metallic and insulating thin films
Artikel i vetenskaplig tidskrift, 2021

The underlying mechanism behind the metal-to-insulator transition in is still a topic of intense debate. The two leading theoretical interpretations associate the transition with either electron-lattice or electron-electron correlations. Novel experimental results are required to converge towards one of the two scenarios. Here we report on a temperature-dependent angle-resolved photoelectron study of thin films across the metal-to-insulator transition. The obtained experimental results are compared to density functional theory calculations. We find an overall energy shift and compression of the electronic band structure across the transition while the overall band topology is conserved. The results demonstrate the importance of electron-electron correlations in establishing the insulating state.

Författare

Viktor Jonsson

Kungliga Tekniska Högskolan (KTH)

Luca Piazza

Kungliga Tekniska Högskolan (KTH)

Martin Månsson

Kungliga Tekniska Högskolan (KTH)

Jonas Weissenrieder

Kungliga Tekniska Högskolan (KTH)

Oscar Tjernberg

Kungliga Tekniska Högskolan (KTH)

Sergiy Khartsev

Kungliga Tekniska Högskolan (KTH)

Yasmine Sassa

Chalmers, Fysik, Materialfysik

Daniel G. Mazzone

Paul Scherrer Institut

Nicolas Gauthier

Paul Scherrer Institut

Matthias Muntwiler

Paul Scherrer Institut

Chin Shen Ong

Uppsala universitet

Diana Iuşan

Uppsala universitet

Patrik Thunström

Uppsala universitet

Olle Eriksson

Uppsala universitet

Physical Review Research

26431564 (ISSN)

Vol. 3 3 033286

Ämneskategorier

Atom- och molekylfysik och optik

Teoretisk kemi

Den kondenserade materiens fysik

DOI

10.1103/PhysRevResearch.3.033286

Mer information

Senast uppdaterat

2021-10-19