Stark effect of the Au(111) and Cu(111) surface states

Details Stark effect of the Au(111) and Cu(111) surface states Stark effect of the Au(111) and Cu(111) surface states

2004-02-03

arxiv.org/abs/cond-mat/0402083v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 3 figures, 1 table

Scientific paper

10.1103/PhysRevB.70.033401

We present a low-temperature scanning tunneling spectroscopy study of the Au(111) and of the Cu(111) surface states showing that their binding energy increases when the tip is approached towards the surface. This result, supported by a one-dimensional model calculation and by a comparison to existing photoemission spectroscopy measurements, confirms the existence of a tip-induced Stark effect as previously reported for Ag(111) [L. Limot et al., Phys. Rev. Lett. 91, 196801 (2003)], and suggests that this effect is a general feature of scanning tunneling spectroscopy.

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