A self-developed low temperature scanning tunneling microscope (LT-STM) for better thermal resolution. Using a pulse tube cryostat with helium cooling, sample temperatures of down to ~6 K can be reached. The use of a "dry" closed-cycle cryostat constitutes a new development in scanning probe microscopy, the main challenge being the mechanical decoupling between cryostat and microscope head.
Pressure Range:
Prep chamber: down to 10-9 hPa
Main chamber: down to 10-10 hPa
Sample Temperature Range:
8 K - 400 K
Equipment:
electron beam evaporator
reactive plasma ion etch
self-developed, elaborate sample- and tip transfer system in ultra high vacuum for complete preparation of both under vacuum
