Infrared spectroscopy of Landau levels in graphene

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We report infrared studies of the Landau level (LL) transitions in single layer graphene. Our specimens are density tunable and show \textit{in situ} half-integer quantum Hall plateaus. Infrared transmission is measured in magnetic fields up to B=18 T at selected LL fillings. Resonances between hole LLs and electron LLs, as well as resonances between hole and electron LLs are resolved. Their transition energies are proportional to $\sqrt{B}$ and the deduced band velocity is $\tilde{c}\approx1.1\times10^6$ m/s. The lack of precise scaling between different LL transitions indicates considerable contributions of many-particle effects to the infrared transition energies.
4 pages, 3 figures, to appear in Phys. Rev. Lett

Keywords

Mesoscale and Nanoscale Physics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/128836

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0703822
 http://arxiv.org/abs/cond-mat/0703822
 Phys. Rev. Lett. 98, 197403 (2007).
 doi:10.1103/PhysRevLett.98.197403

Collections

arXiv