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Cyclotron Resonance in Bilayer Graphene
- Source :
- Physical Review Letters. 100
- Publication Year :
- 2008
- Publisher :
- American Physical Society (APS), 2008.
-
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 \sqrt{B} 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.<br />Comment: to appear in Phys. Rev. Lett. Updated version with two added references and minor text editing
- Subjects :
- Physics
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed matter physics
Graphene
Cyclotron resonance
FOS: Physical sciences
General Physics and Astronomy
Zero-point energy
02 engineering and technology
Landau quantization
Quantum Hall effect
021001 nanoscience & nanotechnology
01 natural sciences
7. Clean energy
Magnetic field
law.invention
law
Dispersion relation
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
0103 physical sciences
010306 general physics
0210 nano-technology
Bilayer graphene
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 100
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....7b8f5063a48b716dff4a465b6957c1cd