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Ultrafast carrier dynamics around nanoscale Schottky contacts studied by femtosecond far- and near-field optics
| Content Provider | Semantic Scholar |
|---|---|
| Author | Achermanna, M. |
| Copyright Year | 2000 |
| Abstract | Farand near-field femtosecond pump–probe spectroscopy has been used to study ultrafast carrier dynamics in matrices of nanometer-scale tungsten disks embedded in GaAs. These studies reveal the dynamics of carrier transfer from a semiconductor into embedded metal clusters in the presence of Schottky contacts and built-in electric fields. The carrier transfer involves transport towards and trapping into the tungsten disks. We find picosecond time constants at higher carrier densities when the built-in field is screened, allowing for efficient carrier transport. Near-field measurements reveal the spatial variation of carrier dynamics. The spatially averaged dynamics can be controlled by the tungsten disk spacing. ©2000 American Institute of Physics. @S0003-6951 ~00!04147-4# |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.marcachermann.com/Publications/APL_Schottky_00.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |