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Cited by 361

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Weak Antilocalization in Epitaxial Graphene: Evidence for Chiral Electrons

Open access
Wu, Xiaosong, Li, Xuebin, Song, Zhimin, Berger, Claire, de Heer, Walt A.·2007·Physical Review Letters

Abstract

Transport in ultrathin graphite grown on silicon carbide is dominated by the electron-doped epitaxial layer at the interface. Weak antilocalization in 2D samples manifests itself as a broad cusplike depression in the longitudinal resistance for magnetic fields 10 mT<B<5 T. An extremely sharp weak-localization resistance peak at B=0 is also observed. These features quantitatively agree with graphene weak-(anti)localization theory implying the chiral electronic character of the samples. Scattering contributions from the trapped charges in the substrate and from trigonal warping due to the graphite layer on top are tentatively identified. The Shubnikov-de Haas oscillations are remarkably small and show an anomalous Berry's phase.

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Metadata

Authors
Wu, X., Li, X., Song, Z., Berger, C., & de Heer, W. A.
Venue
Physical Review Letters
Published
2007-03-27
Volume
98
Issue
13
Pages
136801-136801
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2041948694
Cited by
361
References
5
FWCI
19.01
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Weak Antilocalization in Epitaxial Graphene: Evidence for Chiral Electrons. https://app.cochat.ai/papers/10.1103/physrevlett.98.136801
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Wu, X., Li, X., Song, Z., Berger, C., & de Heer, W. A. (2007). Weak Antilocalization in Epitaxial Graphene: Evidence for Chiral Electrons. Physical Review Letters. https://doi.org/10.1103/physrevlett.98.136801

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