Volume 96, Issue 12
31 March 2006
On the Cover
Symmetrized angle-resolved photoemission spectra of the valence band of Sn/Ge(111) at two different surface temperatures, showing the opening of a surface band gap.
From the article:
Observation of a Mott Insulating Ground State for at Low Temperature
R. Cortés, A. Tejeda, J. Lobo, C. Didiot, B. Kierren, D. Malterre, E. G. Michel, and A. Mascaraque
Phys. Rev. Lett. 96, 126103 (2006)