Electronic structure of 2D van der Waals crystals and heterostructures investigated by spatially- and angle-resolved photoemission

Irène Cucchi; Simone Lisi; Florian Margot; Hugo Henck; Anna Tamai; Felix Baumberger

doi:10.5802/crphys.91

Electronic structure of 2D van der Waals crystals and heterostructures investigated by spatially- and angle-resolved photoemission

Irène Cucchi ¹ ; Simone Lisi ¹ ; Florian Margot ¹ ; Hugo Henck ¹ ; Anna Tamai ¹ ; Felix Baumberger ^1,²

¹ Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland
² Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland

Comptes Rendus. Physique, Volume 22 (2021) no. S4, pp. 107-131.

Résumé
Abstract

La photoémission résolue en angle mesure directement la structure électronique des matériaux et s’est distinguée dans l’étude de cristaux volumiques avec de nouvelles propriétés électroniques. Grâce à des avancées techniques récentes, cette technique peut maintenant être utilisée pour étudier les hétérostructures de van der Waals construites en empilant des cristaux bidimensionnels. Dans cet article, nous présenterons l’état de l’art actuel pour la photoémission résolue en angle appliquée aux matériaux bidimensionnels, et nous dresserons un panorama de ce domaine encore jeune. Nous nous focaliserons en particulier sur des systèmes similaires à ceux utilisés pour des expériences de transport et d’optique, y compris la bicouche de graphène avec une orientation relative entre les couches proche de l’angle magique (magic-angle twisted bilayer graphene), et l’effet de la variation in-situ de tension dans les hétérostructures de van der Waals.

Angle-resolved photoemission is a direct probe of the momentum-resolved electronic structure and proved influential in the study of bulk crystals with novel electronic properties. Thanks to recent technical advances, this technique can now be applied for the first time for the study of van der Waals heterostructures built by stacking two-dimensional crystals. In this article we will present the current state of the art in angle-resolved photoemission measurements on two-dimensional materials and review this still young field. We will focus in particular on devices similar to those used in transport and optics experiments, including the latest developments on magic-angle twisted bilayer graphene and on the in-operando characterization of gate tunable devices.

Première publication : 2021-12-13
Publié le : 2022-03-08

DOI : 10.5802/crphys.91

Keywords: nano-ARPES, 2D materials, van der Waals heterostructures, electronic structure
Mots clés : nano-ARPES, matériaux 2D, hétérostructure de van der Waals, structure électronique

Affiliations des auteurs :

Irène Cucchi ¹ ; Simone Lisi ¹ ; Florian Margot ¹ ; Hugo Henck ¹ ; Anna Tamai ¹ ; Felix Baumberger ^{1, 2}

¹ Department of Quantum Matter Physics, University of Geneva, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland
² Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland

Licence :

CC-BY 4.0

Droits d'auteur : Les auteurs conservent leurs droits

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     author = {Ir\`ene Cucchi and Simone Lisi and Florian Margot and Hugo Henck and Anna Tamai and Felix Baumberger},
     title = {Electronic structure of {2D} van der {Waals} crystals and heterostructures investigated by spatially- and angle-resolved photoemission},
     journal = {Comptes Rendus. Physique},
     pages = {107--131},
     publisher = {Acad\'emie des sciences, Paris},
     volume = {22},
     number = {S4},
     year = {2021},
     doi = {10.5802/crphys.91},
     language = {en},
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Irène Cucchi; Simone Lisi; Florian Margot; Hugo Henck; Anna Tamai; Felix Baumberger. Electronic structure of 2D van der Waals crystals and heterostructures investigated by spatially- and angle-resolved photoemission. Comptes Rendus. Physique, Volume 22 (2021) no. S4, pp. 107-131. doi : 10.5802/crphys.91. https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.91/

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