Abstract
Low-temperature scanning-tunneling-microscope (STM) studies of charging effects have been carried out on granular lead films. Well-defined Coulomb-staircase and Coulomb-blockade I-V characteristics were frequently observed. For the first time, the latter were observed in the tunneling characteristics of grains imaged with scanning tunneling microscopy. Capacitances (<10-18 F) calculated from the I-V characteristics are compared to the values estimated from the STM images of these grains. In addition to the charging effects, an anomalous nonlinearity in the tunneling current was observed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5604-5609 |
| Number of pages | 6 |
| Journal | Physical Review B |
| Volume | 42 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1990 |
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