Year: 2008
Type: article
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 square root[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.
Source: Physical Review Letters
Institutions: Columbia University, National High Magnetic Field Laboratory
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: G1169002449, ELECTRIC TRANSPORT IN NOVEL 2-DIMENSIONAL NANOSCALE SYSTEMS, G1805687258, G2099661979, G2599674814, INCORPORATION OF THE HYBRID COORDINATE OCEAN MODEL (HYCOM) INTO THE COMMUNITY CLIMATE SYSTEM MODEL (CCSM): EVALUATION AND CLIMATE APPLICATIONS, Nanoscience and Engineering Center: Columbia Center for Electronic Transport in Molecular Nanostructures, National High Magnetic Field Laboratory, G8476215133
OpenAlex ID: W2156495040