Cyclotron Resonance in Bilayer Graphene

by: EA Henriksen, Z Jiang, LC Tung, ME Schwartz, M Takita, YJ Wang, P Kim, HL Stormer

Physical Review Letters, Vol. 100, No. 8. (2008)

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Abstract

We present the first measurements of cyclotron resonance of electrons and holes in bilayer graphene. In magnetic fields up to B=18 T, we observe four distinct intraband transitions in both the conduction and valence bands. The transition energies are roughly linear in B between the lowest Landau levels, whereas they follow for the higher transitions. This highly unusual behavior represents a change from a parabolic to a linear energy dispersion. The density of states derived from our data generally agrees with the existing lowest order tight binding calculation for bilayer graphene. However, in comparing data to theory, a single set of fitting parameters fails to describe the experimental results.

@article{citeulike:2805173, abstract = {We present the first measurements of cyclotron resonance of electrons and holes in bilayer graphene. In magnetic fields up to B=18 T, we observe four distinct intraband transitions in both the conduction and valence bands. The transition energies are roughly linear in B between the lowest Landau levels, whereas they follow for the higher transitions. This highly unusual behavior represents a change from a parabolic to a linear energy dispersion. The density of states derived from our data generally agrees with the existing lowest order tight binding calculation for bilayer graphene. However, in comparing data to theory, a single set of fitting parameters fails to describe the experimental results.}, author = {Henriksen, E. A. and Jiang, Z. and Tung, L. C. and Schwartz, M. E. and Takita, M. and Wang, Y. J. and Kim, P. and Stormer, H. L. }, citeulike-article-id = {2805173}, doi = {http://dx.doi.org/10.1103/PhysRevLett.100.087403}, journal = {Physical Review Letters}, keywords = {bilayer, cyclotron, graphene, landau, magnetic}, number = {8}, posted-at = {2008-05-16 13:13:59}, priority = {2}, publisher = {APS}, title = {Cyclotron Resonance in Bilayer Graphene}, url = {http://dx.doi.org/10.1103/PhysRevLett.100.087403}, volume = {100}, year = {2008} }

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TY - JOUR ID - citeulike:2805173 L3 - citeulike-article-id:2805173 TI - Cyclotron Resonance in Bilayer Graphene JF - Physical Review Letters VL - 100 IS - 8 PB - APS N2 - We present the first measurements of cyclotron resonance of electrons and holes in bilayer graphene. In magnetic fields up to B=18 T, we observe four distinct intraband transitions in both the conduction and valence bands. The transition energies are roughly linear in B between the lowest Landau levels, whereas they follow for the higher transitions. This highly unusual behavior represents a change from a parabolic to a linear energy dispersion. The density of states derived from our data generally agrees with the existing lowest order tight binding calculation for bilayer graphene. However, in comparing data to theory, a single set of fitting parameters fails to describe the experimental results. KW - bilayer KW - cyclotron KW - graphene KW - landau KW - magnetic AU - Henriksen, EA AU - Jiang, Z AU - Tung, LC AU - Schwartz, ME AU - Takita, M AU - Wang, YJ AU - Kim, P AU - Stormer, HL PY - 2008/// UR - http://dx.doi.org/10.1103/PhysRevLett.100.087403 ER -

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