Abstract
The local effects of isolated magnetic adatoms on the electronic properties of the surface of a superconductor were studied with a low- temperature scanning tunneling microscope. Tunneling spectra obtained near magnetic adsorbates reveal the presence of excitations within the superconductor's energy gap that can be detected over a few atomic diameters around the impurity at the surface. These excitations are locally asymmetric with respect to tunneling of electrons and holes. A model calculation based on the Bogoliubov-de Gennes equations can be used to understand the details of the local tunneling spectra.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1767-1770 |
| Number of pages | 4 |
| Journal | Science |
| Volume | 275 |
| Issue number | 5307 |
| DOIs | |
| State | Published - Mar 21 1997 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General
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