The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Observation of electron–hole puddles in graphene using a scanning single-electron transistor
Open accessAbstract
The electronic structure of graphene causes its charge carriers to behave like relativistic particles. For a perfect graphene sheet free from impurities and disorder, the Fermi energy lies at the so-called ‘Dirac point’, where the density of electronic states vanishes. But in the inevitable presence of disorder, theory predicts that equally probable regions of electron-rich and hole-rich puddles will arise. These puddles could explain graphene’s anomalous non-zero minimal conductivity at zero average carrier density. Here, we use a scanning single-electron transistor to map the local density of states and the carrier density landscape in the vicinity of the neutrality point. Our results confirm the existence of electron–hole puddles, and rule out extrinsic substrate effects as explanations for their emergence and topology. Moreover, we find that, unlike non-relativistic particles the density of states can be quantitatively accounted for by considering non-interacting electrons and holes.
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Citations
Cites
Electric Field Effect in Atomically Thin Carbon Films
Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Zhang, Y., Dubonos, S. V., Grigorieva, I. V., & Firsov, A. A. (2004) · Science · doi:10.1126/science.1102896 · Cited by 66,834
Geim, A. K., & Novoselov, K. S. (2007) · Nature Materials · doi:10.1038/nmat1849 · Cited by 39,979
Two-dimensional gas of massless Dirac fermions in graphene
Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Katsnelson, M. I., Grigorieva, I. V., Dubonos, S. V., & Firsov, A. A. (2005) · Nature · doi:10.1038/nature04233 · Cited by 21,611
Experimental observation of the quantum Hall effect and Berry's phase in graphene
Zhang, Y., Tan, Y.-W., Stormer, H. L., & Kim, P. (2005) · Nature · doi:10.1038/nature04235 · Cited by 13,435
Two-dimensional atomic crystals
Novoselov, K. S., Jiang, D., Schedin, F., Booth, T. J., Khotkevich, V. V., Morozov, S. V., & Geim, A. K. (2005) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0502848102 · Cited by 11,788
Chiral tunnelling and the Klein paradox in graphene
Katsnelson, M. I., Novoselov, K. S., & Geim, A. K. (2006) · Nature Physics · doi:10.1038/nphys384 · Cited by 3,896
Electronic properties of disordered two-dimensional carbon
Peres, N. M. R., Guinea, F., & Castro Neto, A. H. (2006) · Physical Review B · doi:10.1103/physrevb.73.125411 · Cited by 1,445
Cited by
The electronic properties of graphene
Castro Neto, A. H., Guinea, F., Peres, N. M. R., Novoselov, K. S., & Geim, A. K. (2009) · Reviews of Modern Physics · doi:10.1103/revmodphys.81.109 · Cited by 24,803
“Single ele -tron transistor (SET) measurements of graphene showthat this seems to be the situation in graphene at half- lling (Martin et al., 2007).”
BackgroundGraphene-Like Two-Dimensional Materials
Xu, M., Liang, T., Shi, M., & Chen, H. (2013) · Chemical Reviews · doi:10.1021/cr300263a · Cited by 4,531
Degen, C. L., Reinhard, F., & Cappellaro, P. (2017) · Reviews of Modern Physics · doi:10.1103/revmodphys.89.035002 · Cited by 4,045
Approaching ballistic transport in suspended graphene
Du, X., Skachko, I., Barker, A., & Andrei, E. Y. (2008) · Nature Nanotechnology · doi:10.1038/nnano.2008.199 · Cited by 3,258
Measurement of the quantum capacitance of graphene
Xia, J., Chen, F., Li, J., & Tao, N. (2009) · Nature Nanotechnology · doi:10.1038/nnano.2009.177 · Cited by 1,752
Metadata
- Authors
- Martin, J., Akerman, N., Ulbricht, G., Lohmann, T., Smet, J. H., von Klitzing, K., & Yacoby, A.
- Venue
- Nature Physics
- Published
- 2007-11-25
- Volume
- 4
- Issue
- 2
- Pages
- 144-148
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W2170068899
- Cited by
- 1,566
- References
- 7
- FWCI
- 48.63
- Type
- journal article
- Language
- en
- Open access
- green
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