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Departmental Colloquium

Title
Ultraviolet Photoemission Study of Graphene Crystalline Quality  
Guest Speaker
Dr. Michael Williams  
Guest Affiliation
Clark Atlanta University, Department of Physics  
Host
Dr. Phillip Stancil  
When
Thursday, January 13, 2011 4:00 pm - 5:00 pm  
Location
Physics 202  
Details

Ultraviolet photoemission spectroscopy is used to investigate the growth of epitaxial graphene layers grown by the thermal decomposition of the Si face of 4H SiC (0001). We find that thinner layers of grown material have more pronounced spectral features in the valence band structure of the material.  This result is indicative of a higher ordered surface structure and material quality compared to thicker layers.

 

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