Electronic and geometric corrugation of periodically rippled, self-nanostructured graphene epitaxially grown on Ru(0001)
By B. Borca, S. Barja, M. Garnica, M. Minniti, A. Politano, Josefa M Rodriguez-García, J. J. Hinarejos, D. Farías, A. L. V. D. Parga, R. Miranda. 2010
136 citations recorded by the source corpus.
Graphene epitaxially grown on Ru(0001) displays a remarkably ordered pattern of hills and valleys in scanning tunneling microscopy (STM) images. The extent to which the observed ‘ripples’ are structural or electronic in origin has been much disputed recently. A combination of ultrahigh-resolution STM images and helium atom diffraction data shows that (i) the graphene lattice is rotated with respect to the lattice of Ru and (ii) the structural corrugation as determined from He diffraction is substantially smaller (0.15 Å) than predicted (1.5 Å) or reported from x-ray diffraction or low-energy electron diffraction. The electronic corrugation, on the contrary, is strong enough to invert the contrast between hills and valleys above +2.6 V as new, spatially localized electronic states enter the energy window of the STM. The large electronic corrugation results in a nanostructured periodic landscape of electron and hole pockets.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/e3c5d6fd04ee154901a1fa0622fd4bf2ca8db46a
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
- G. Chiarello
- A. Politano
Citations in the corpus
- Probing the Young’s modulus and Poisson’s ratio in graphene/metal interfaces and graphite: a comparative study (2015, background): “Such a comparative analysis could clarify whether the elastic properties of periodically rippled graphene on Ru(0001)[8, 25, 26] are different with respect to systems in which the graphene overstructure is nearly flat.”