Observation of Landau levels in potassium-intercalated graphite under a zero magnetic field

Donghui Guo, Takahiro Kondo, Takahiro Machida, Keigo Iwatake, Susumu Okada and Junji Nakamura ()
Additional contact information
Donghui Guo: Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai
Takahiro Kondo: Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai
Takahiro Machida: Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai
Keigo Iwatake: Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai
Susumu Okada: Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai
Junji Nakamura: Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai

Nature Communications, 2012, vol. 3, issue 1, 1-6

Abstract: Abstract The charge carriers in graphene are massless Dirac fermions and exhibit a relativistic Landau-level quantization in a magnetic field. Recently, it has been reported that, without any external magnetic field, quantized energy levels have been also observed from strained graphene nanobubbles on a platinum surface, which were attributed to the Landau levels of massless Dirac fermions in graphene formed by a strain-induced pseudomagnetic field. Here we show the generation of the Landau levels of massless Dirac fermions on a partially potassium-intercalated graphite surface without applying external magnetic field. Landau levels of massless Dirac fermions indicate the graphene character in partially potassium-intercalated graphite. The generation of the Landau levels is ascribed to a vector potential induced by the perturbation of nearest-neighbour hopping, which may originate from a strain or a gradient of on-site potentials at the perimeters of potassium-free domains.

Date: 2012
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms2072 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms2072

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms2072

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().