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Bibliographic record number: 866122

Journal

Authors: Dombrowski, Daniela; Jolie, Wouter; Petrović, Marin; Runte, Sven; Craes, Fabian; Klinkhammer, Jürgen; Kralj, Marko; Lazić, Predrag; Sela, Eran; Busse, Carsten
Title: Energy-Dependent Chirality Effects in Quasifree-Standing Graphene
( Energy-Dependent Chirality Effects in Quasifree-Standing Graphene )
Source: Physical Review Letters (0031-9007) 118 (2017), 11;
Paper type: article
Keywords: graphene ; intercalation ; chirality ; electron scattering ; STM ; STS
( graphene ; intercalation ; chirality ; electron scattering ; STM ; STS )
Abstract:
We present direct experimental evidence of broken chirality in graphene by analyzing electron scattering processes at energies ranging from the linear (Dirac-like) to the strongly trigonally warped region. Furthermore, we are able to measure the energy of the van Hove singularity at the M point of the conduction band. Our data show a very good agreement with theoretical calculations for free-standing graphene. We identify a new intravalley scattering channel activated in case of a strongly trigonally warped constant energy contour, which is not suppressed by chirality. Finally, we compare our experimental findings with T-matrix simulations with and without the presence of a pseudomagnetic field and suggest that higher order electron hopping effects are a key factor in breaking the chirality near to the van Hove singularity.
Project / theme: EK-H2020-692194
Original language: eng
Citation databases: Current Contents Connect (CCC)
MEDLINE
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Category: Znanstveni
Research fields:
Physics
URL: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.116401
Broj citata:
Altmetric:
DOI: 10.1103/PhysRevLett.118.116401
URL cjelovitog rada:
Google Scholar: Energy-Dependent Chirality Effects in Quasifree-Standing Graphene
Contrib. to CROSBI by: Marin Petrovic (mpetrovic@ifs.hr), 15. Ožu. 2017. u 14:34 sati



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