Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Published Online February 15, 2007
Science DOI: 10.1126/science.1137201

Brevia

Submitted on November 6, 2006
Accepted on January 31, 2007

Room-Temperature Quantum Hall Effect in Graphene

K. S. Novoselov 1, Z. Jiang 2, Y. Zhang 3, S. V. Morozov 1, H. L. Stormer 3, U. Zeitler 4, J. C. Maan 4, G. S. Boebinger 5, P. Kim 3*, A. K. Geim 1*

1 Department of Physics, University of Manchester, M13 9PL, Manchester, UK.
2 Department of Physics, University of Manchester, M13 9PL, Manchester, UK; Department of Physics, Columbia University, New York, New York 10027, USA.
3 Department of Physics, Columbia University, New York, New York 10027, USA.
4 High Filed Magnet Laboratory, Radboud University Nijmegen, 6525 ED Nijmegen, Netherlands.
5 National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA.

* To whom correspondence should be addressed.
P. Kim , E-mail: pkim{at}phys.columbia.edu
A. K. Geim , E-mail: geim{at}man.ac.uk

The quantum Hall effect (QHE), one example of a quantum phenomenon that occur on a truly macroscopic scale, has been attracting 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 could only have been observed at liquid-helium temperatures. Here, we show that in graphene - a single atomic layer of carbon - the QHE can reliably be measured even at room temperature, which is not only surprising and inspirational but also promises QHE resistance standards becoming available to a broader community, outside a few national institutions.




ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)