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Showing 1–5 of 5 results
Advanced filters: Author: N. B. Zhitenev Clear advanced filters

  • Its tunable energy bandgap makes bilayer graphene interesting both from a theoretical perspective and with a view to applications. But exactly how the bandgap is formed is still unclear. A scanning tunnelling spectroscopy study now finds that the microscopic picture of the gap is fundamentally different from what is expected from macroscopic measurements and currently developed theories.

    • Gregory M. Rutter
    • Suyong Jung
    • Joseph A. Stroscio
    Research
    Nature Physics
    Volume: 7, P: 649-655

  • In graphene, two particular sets of electrons exist that have a fourfold energy degeneracy. To study the corresponding four quantum states comprising a Landau level, these authors perform measurements on epitaxial graphene at 10 millikelvin. They take spectral 'fingerprints' of the Landau levels, showing in detail how they evolve with magnetic field and how they split into the four separate quantum states. They also observe states with Landau level filling factors of 7/2, 9/2 and 11/2.

    • Young Jae Song
    • Alexander F. Otte
    • Joseph A. Stroscio
    Research
    Nature
    Volume: 467, P: 185-189