Suppression of short-range scattering via hydrophobic substrates and the fractional quantum Hall effect in graphene

Krstic V, Hansel S, Lafkioti M, Krstic V (2012)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2012

Journal

Physica Status Solidi-Rapid Research Letters Wiley-VCH Verlag

Book Volume: 6

Pages Range: 376-378

DOI: 10.1002/pssr.201206297

Abstract

We demonstrate that a hydrophobic layer between substrate and graphene largely eliminates Coulomb interaction between the graphene monolayer and charged impurities on the substrate, significantly reducing short-range scattering. At high carrier concentrations the mobilities thus obtained, deliver a ratio of Coulomb scattering mean free path to average charge carrier separation comparable to that of the highest mobility samples that exhibit the fractional quantum Hall effect (FQHE). We observe the FQHE in the lowest mobility samples reported up to now and conclude that increasing the ratio of Coulomb scattering mean free path to charge carrier separation overcomes the limitations for the observation of the FQHE imposed by overall mobility. 

Authors with CRIS profile

Vojislav Krstic Professur für Angewandte Physik

Involved external institutions

Trinity College Dublin IE Ireland (IE) Max-Planck-Institut für Festkörperforschung DE Germany (DE)

How to cite

APA:

Krstic, V., Hansel, S., Lafkioti, M., & Krstic, V. (2012). Suppression of short-range scattering via hydrophobic substrates and the fractional quantum Hall effect in graphene. Physica Status Solidi-Rapid Research Letters, 6, 376-378. https://doi.org/10.1002/pssr.201206297

MLA:

Krstic, Vojislav, et al. "Suppression of short-range scattering via hydrophobic substrates and the fractional quantum Hall effect in graphene." Physica Status Solidi-Rapid Research Letters 6 (2012): 376-378.

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