The nature of highly anisotropic free-electron-like states in a glycinate monolayer on Cu(100)

Details The nature of highly anisotropic free-electron-like states in a glycinate monolayer on Cu(100) The nature of highly anisotropic free-electron-like states in a glycinate monolayer on Cu(100)

2007-11-27

arxiv.org/abs/0711.4339v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1088/0953-8984/20/31/312002

The free-electron-like state observed in a scanning tunneling spectroscopy study of a chiral p(2x4) monolayer of glycinate ions on the Cu(100) surface [K. Kanazawa et al, J. Am. Chem. Soc. 129, 740 (2007)] is shown from density functional theory calculations to originate from a Cu Shockley surface state at the surface Brillouin zone boundary of the clean surface with highly anisotropic dispersion. The presence of the glycinate ions on the surface causes a dramatically enhanced tunneling into this surface state that is otherwise not observed in tunneling on the bare surface.

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