| AVS 65th International Symposium & Exhibition | |
| Nanometer-scale Science and Technology Division | Thursday Sessions |
| Session NS-ThP |
| Session: | Nanometer-scale Science and Technology Division Poster Session |
| Presenter: | Markus Maier, Scienta Omicron GmbH, Germany |
| Authors: | M. Maier, Scienta Omicron GmbH, Germany D. Stahl, Scienta Omicron GmbH, Germany A. Piriou, Scienta Omicron GmbH, Germany M. Fenner, Scienta Omicron GmbH, Germany J. Koeble, Scienta Omicron GmbH, Germany K. Winkler, Scienta Omicron GmbH, Germany T. Roth, Scienta Omicron GmbH, Germany |
| Correspondent: | Click to Email |
The TESLA JT SPM provides access to more than 5 days SPM measurement time at temperatures down to 1K (4He operation) with magnetic fields larger than B > 3T. Careful thermal design of the bath cryostat and JT cooling stage as well as the integrated UHV magnet lead to exceptionally low LHe consumption of only 11 liters LHe for 120 hours, specifically also during magnet operation and field variation. The external JT Helium supply allows for 3He operation and significantly lower temperatures in the range of 500mK.
The microscope head is a proven, highly stable design developed specifically for high magnetic field environments. It offers the full range of SPM measurements modes, including Scienta Omicron’s leading QPlus AFM technology.
Safe and independent tip/sample exchange under optical control is one of several key ease-of-use features delivering dependable high performance SPM and successful scientific work.
In contrast to a conventional wet magnet concept, the dry split-pair magnet provides for optical access enabling various optical experiments and even in-situ evaporation into the SPM at low temperatures.
We will discuss the technical concept and will show performance evaluation measurements at T=1K that prove stability below 1pm as well as energy resolution on superconductors.
Specifically, continuous STM and QPlus AFM imaging at varying temperatures during magnetic field ramping without increasing the LHe consumption differentiate the concept from traditional 4He and 3He systems and open up new experimental possibilities.