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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(06) [June 2011] >
| Title: | Quantum Hall effect in graphene: Status and prospects |
| Authors: | Sahoo, S |
| Keywords: | Quantum Hall effect
Graphene
Landau levels |
| Issue Date: | Jun-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Graphene is the
recently discovered two-dimensional (2D) one atom thick allotrope of carbon.
Electrons in graphene, obeying a linear dispersion relation, behave like
massless relativistic particles. It is a 2D nanomaterial with many peculiar
properties. It is the thinnest material in the universe and the strongest ever
measured. Its charge carriers exhibit intrinsic mobility and can travel
micrometer-long distances without scattering at room temperature. Its
unconventional Landau level spectrum of massless Dirac fermions leads to a new
type of integer quantum Hall effect (IQHE) [known as half-integer quantum Hall
effect or anomalous quantum Hall effect] which remains visible up to room
temperature. Although, the conclusive evidence for collective behaviour of
electrons in graphene is lacking so far, recently scientists have observed the
fractional quantum Hall effect (FQHE) in graphene experimentally. In this
review article, we discuss the IQHE and the FQHE in graphene briefly. |
| Page(s): | 367-371 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(06) [June 2011]
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