Observing the Quantization of Zero Mass Carriers in Graphene-Reference-Cited by-同舟云学术

Observing the Quantization of Zero Mass Carriers in Graphene

Published:2009-05-15 Issue:5929 Volume:324 Page:924-927
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Miller David L.¹,Kubista Kevin D.¹,Rutter Gregory M.²,Ruan Ming¹,de Heer Walt A.¹,First Phillip N.¹,Stroscio Joseph A.²

Affiliation:

1. School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA.

2. Center for Nanoscale Science and Technology, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899, USA.

Abstract

Resolving Landau Levels in Graphene The charge carriers in a two-dimensional conductor, when placed in a magnetic field, can develop an additional set of quantized energy levels. These Landau levels correspond to the carriers now moving in cyclotron orbits. In graphene, which consists of single-atom-thick sheets of graphite, an unusual set of Landau levels with nonequal energy spacing can develop in graphene layers that have undergone symmetry breaking caused by rotation between adjacent layers. Miller et al. (p. 924 ) used scanning tunneling microscopy at cryogenic temperatures to map out Landau levels in graphene grown on silicon carbide with high energy and momentum resolution, including the characteristic level in graphene that can occur at zero energy.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference31 articles.

1. Ultrathin Epitaxial Graphite: 2D Electron Gas Properties and a Route toward Graphene-based Nanoelectronics

2. Electronic Confinement and Coherence in Patterned Epitaxial Graphene

3. Two-dimensional gas of massless Dirac fermions in graphene

4. Experimental observation of the quantum Hall effect and Berry's phase in graphene

5. STS Observations of Landau Levels at Graphite Surfaces

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