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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Correlations in the elastic Landau level of spontaneously buckled graphene

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Manesco, A. L. R. [1, 2] ; Lado, J. L. [3] ; Ribeiro, E. V. S. [2] ; Weber, G. [2] ; Rodrigues Jr, D.
Total Authors: 5
[1] Delft Univ Technol, Kavli Inst Nanosci, POB 4056, NL-2600 GA Delft - Netherlands
[2] Univ Sao Paulo, Lorena Engn Sch, Lorena - Brazil
[3] Aalto Univ, Dept Appl Phys, Espoo - Finland
Total Affiliations: 3
Document type: Journal article
Source: 2D MATERIALS; v. 8, n. 1 JAN 2021.
Web of Science Citations: 0

Electronic correlations stemming from nearly flat bands in van der Waals materials have demonstrated to be a powerful playground to engineer artificial quantum matter, including superconductors, correlated insulators and topological matter. This phenomenology has been experimentally observed in a variety of twisted van der Waals materials, such as graphene and dichalcogenide multilayers. Here we show that spontaneously buckled graphene can yield a correlated state, emerging from an elastic pseudo Landau level. Our results build on top of recent experimental findings reporting that, when placed on top of hBN or NbSe2 substrates, wrinkled graphene sheets relax forming a periodic, long-range buckling pattern. The low-energy physics can be accurately described by electrons in the presence of a pseudo-axial gauge field, leading to the formation of sublattice-polarized Landau levels. Moreover, we verify that the high density of states at the zeroth Landau level leads to the formation of a periodically modulated ferrimagnetic groundstate, which can be controlled by the application of external electric fields. Our results indicate that periodically strained graphene is a versatile platform to explore emergent electronic states arising from correlated elastic Landau levels. (AU)

FAPESP's process: 19/07082-9 - Physics of graphene/superconductor junctions
Grantee:Antonio Lucas Rigotti Manesco
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 16/10167-8 - Investigation of electronic and topological properties of superconductor-graphene heterojunctions for applications in quantum computation devices
Grantee:Antonio Lucas Rigotti Manesco
Support type: Scholarships in Brazil - Doctorate (Direct)