Room-Temperature Quantum Hall Effect in Graphene

Author:

Novoselov K. S.1234,Jiang Z.1234,Zhang Y.1234,Morozov S. V.1234,Stormer H. L.1234,Zeitler U.1234,Maan J. C.1234,Boebinger G. S.1234,Kim P.1234,Geim A. K.1234

Affiliation:

1. Department of Physics, University of Manchester, Manchester M13 9PL, UK.

2. Department of Physics, Columbia University, New York, NY 10027, USA.

3. National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA.

4. High Field Magnet Laboratory, Radboud University Nijmegen, 6525 ED Nijmegen, Netherlands.

Abstract

The quantum Hall effect (QHE), one example of a quantum phenomenon that occurs on a truly macroscopic scale, has attracted intense interest since its discovery in 1980 and has helped elucidate many important aspects of quantum physics. It has also led to the establishment of a new metrological standard, the resistance quantum. Disappointingly, however, the QHE has been observed only at liquid-helium temperatures. We show that in graphene, in a single atomic layer of carbon, the QHE can be measured reliably even at room temperature, which makes possible QHE resistance standards becoming available to a broader community, outside a few national institutions.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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