Direct observation of a widely tunable bandgap in bilayer graphene

Yuanbo Zhang, Tsung-Ta Tang, Caglar Girit, Zhao Hao, Michael C. Martin, Alex Zettl, Michael F. Crommie, Y. Ron Shen and Feng Wang ()
Additional contact information
Yuanbo Zhang: University of California at Berkeley
Tsung-Ta Tang: University of California at Berkeley
Caglar Girit: University of California at Berkeley
Zhao Hao: Lawrence Berkeley National Laboratory
Michael C. Martin: Lawrence Berkeley National Laboratory
Alex Zettl: University of California at Berkeley
Michael F. Crommie: University of California at Berkeley
Y. Ron Shen: University of California at Berkeley
Feng Wang: University of California at Berkeley

Nature, 2009, vol. 459, issue 7248, 820-823

Abstract: Field-tunable bandgap in bilayer graphene The electronic bandgap of a material refers to an energy region where electrons are not 'allowed' to reside because of quantum mechanical considerations related to the symmetries and atomic constituents of the underlying crystal structure. It is a fundamental property of semiconductors and insulators and determines their electrical and optical response, which is why it is a crucial consideration in modern device physics and technologies. Ideally, the bandgap would be tunable by electric fields, which would allow great flexibility in device design and functionality. Until now electrical tunability has proved elusive, but now Zhang et al. demonstrate such a tunable bandgap in a bilayer-graphene-based device, spanning a spectral range from zero to mid-infrared.

Date: 2009
References: Add references at CitEc
Citations: View citations in EconPapers (9)

Downloads: (external link)
https://www.nature.com/articles/nature08105 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

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:nature:v:459:y:2009:i:7248:d:10.1038_nature08105

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

DOI: 10.1038/nature08105

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

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