Abstract
We present a high-voltage extension of the Tersoff-Hamann theory of scanning tunneling microscope (STM) images, which includes the effect of the electric field between the tip and the sample. The theoretical model is based on first-principles electronic structure calculations and has no adjustable parameters. We use the method to calculate theoretical STM images of the monohydrate Si(100)-H(2x1) surface with missing hydrogen defects at -2V and find an enhanced corrugation due to the electric field, in good agreement with experimental images.
| Original language | English |
|---|---|
| Journal | Applied Physics A: Materials Science & Processing |
| Volume | 66 |
| Issue number | 7 |
| Pages (from-to) | S907-S910 |
| ISSN | 0947-8396 |
| DOIs | |
| Publication status | Published - 1998 |
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