Decoupling of epitaxial graphene via gold intercalation probed by dispersive Raman spectroscopy

• Published in: Journal of applied physics Vol. 117; no. 18
• Main Authors: Pillai, P. B., DeSouza, M., Narula, R., Reich, S., Wong, L. Y., Batten, T., Pokorny, J.
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 14.05.2015
• Subjects: Applied physics; Band structure of solids; CLATHRATES; COMPARATIVE EVALUATIONS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DECOUPLING; Doppler effect; EPITAXY; EXCITATION; GOLD; GRAPHENE; LASER RADIATION; LAYERS; PHONONS; PROBES; RAMAN SPECTROSCOPY; RED SHIFT; Signatures; SILICON CARBIDES; Spectrum analysis; SUBSTRATES; SUPERLATTICES

Signatures of a superlattice structure composed of a quasi periodic arrangement of atomic gold clusters below an epitaxied graphene (EG) layer are examined using dispersive Raman spectroscopy. The gold-graphene system exhibits a laser excitation energy dependant red shift of the 2D mode as compared...