Control of electron-electron interaction in graphene by proximity screening

M. Kim; S. G. Xu; A. I. Berdyugin; A. Principi; S. Slizovskiy; N. Xin; P. Kumaravadivel; W. Kuang; M. Hamer; R. Krishna Kumar; R. V. Gorbachev; K. Watanabe; T. Taniguchi; I. V. Grigorieva; V. I. Fal’ko; M. Polini; A. K. Geim

doi:10.1038/s41467-020-15829-1

Nature Communications (May 2020)

Control of electron-electron interaction in graphene by proximity screening

M. Kim,
S. G. Xu,
A. I. Berdyugin,
A. Principi,
S. Slizovskiy,
N. Xin,
P. Kumaravadivel,
W. Kuang,
M. Hamer,
R. Krishna Kumar,
R. V. Gorbachev,
K. Watanabe,
T. Taniguchi,
I. V. Grigorieva,
V. I. Fal’ko,
M. Polini,
A. K. Geim

Affiliations

M. Kim: School of Physics and Astronomy, University of Manchester
S. G. Xu: School of Physics and Astronomy, University of Manchester
A. I. Berdyugin: School of Physics and Astronomy, University of Manchester
A. Principi: School of Physics and Astronomy, University of Manchester
S. Slizovskiy: School of Physics and Astronomy, University of Manchester
N. Xin: School of Physics and Astronomy, University of Manchester
P. Kumaravadivel: School of Physics and Astronomy, University of Manchester
W. Kuang: School of Physics and Astronomy, University of Manchester
M. Hamer: National Graphene Institute, University of Manchester
R. Krishna Kumar: School of Physics and Astronomy, University of Manchester
R. V. Gorbachev: National Graphene Institute, University of Manchester
K. Watanabe: National Institute for Materials Science
T. Taniguchi: National Institute for Materials Science
I. V. Grigorieva: School of Physics and Astronomy, University of Manchester
V. I. Fal’ko: School of Physics and Astronomy, University of Manchester
M. Polini: School of Physics and Astronomy, University of Manchester
A. K. Geim: School of Physics and Astronomy, University of Manchester

DOI: https://doi.org/10.1038/s41467-020-15829-1
Journal volume & issue: Vol. 11, no. 1
pp. 1 – 6

Abstract

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Experimental control of electron-electron interactions in materials is challenging. Here, the authors control the interactions by proximity screening with gate dielectrics of nanometer thickness, revealing qualitative changes in concentration and temperature dependences, and validating their analysis using electron hydrodynamics and umklapp scattering approaches.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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