Experimental station
Our experimental station features a VT XA STM from Scienta-Omicron. It combines a reliable tube scanner, in-vacuum preamplifier, and tip preparation tool, and Eddy current damping system, which allow for routinely available atomic resolution on appropriate samples.
The schematics of the experimental station is given below (images are clickable). More details about available auxiliary equipment available here.
Scanning modes
| Mode | Parameters | Comments |
|---|---|---|
| Constant height | -10 V < Vbias < 10 V 50 pA < It(detectable) < 300 nA | Not used but available |
| Constant current | |Vbias| < 10 V 50 pA < It(setpoint) < 300 nA | The most used typically, 100pA < It(setpoint) < 5 nA and 20 mV< |Vbias| < 3 V |
| Spectroscopic mapping | TBD | TBD |
| NC-AFM | -50 Hz < df < -5 Hz | Raster time (and scan time) may vary greatly depending on the desired resolution/accuracy. |