LT STM
LT STM
Ultimate SPM Performance below 5K
- Increased hold time to >65h at same performance level
- High frequency wiring
- Increased spectroscopy resolution
- Record proven platform since 1996 with more than 200 devices installed
- Reliable design ensuring high up-time
- Independent tip and sample temperature
- Leading QPlus AFM technology
Impressions
Spectroscopy on molecules, atom manipulation, carbon, superconductors, semiconductors, gases on metals, and magnetics are only a few examples where research takes great advantage of low temperature SPM. Within all these areas more publications have been produced with our LT STM than with all other commercial low temperature SPM´s combined.
The third generation of the LT STM
A key feature of the third generation is a 30% increase in liquid helium hold time. This is of great advantage for all low temperature experiments, reducing operating costs and providing users more flexibility. The new cryostat design enables long-term spectroscopy experiments without any compromise to the stability the LT STM has always delivered.
Additionally, completely new state of the art wiring and connections have been designed throughout the system. The LT STM III now supports high frequency lines for tip and sample to enable time resolved STM experiments in the GHz range.
Further, the ultimate energy resolution for spectroscopy has been improved to < 1meV, ideal for work with superconducting materials. When combined with the MATRIX 4 controller and its new, high performance PLL, performing QPlus AFM experiments in the LT STM will be easier and more powerful than any other QPlus AFM platform.
This third generation of the LT STM enables our customers to carry out the most advanced low temperature STM, spectroscopy and QPlus AFM experiments. And like its previous iterations, the ease-of-use, stability and proven reliability in the LT STM ensure a high productivity, workhorse microscope.
The LT STM cryostat
By enlarging the volume of the LN2 vessel, the LN2 level in the cryostat is always above the level of LHe leading to a reduced helium evaporation rate and an overall hold time of more than 65h. This is of great advantage for all low temperature experiments and will further improve the performance and productivity of your LT STM with reduced operating costs.
Ultimate QPlus performance
An essential part of successful Qplus AFM operation is the sensor construction technology. Scienta Omicron has long been the recognized leader in providing the highest quality, most reliable Qplus AFM sensor technology. In the third generation of the LT STM we use the latest generation of QPLus sensors. This advanced fully computer controlled manufacturing technique ensures high yield sensors with sharp resonance frequencies and high quality factors.
With our sophisticated ex-situ preamplifier technique, we are able to fulfil our promise to deliver the highest up-time without sacrificing performance. Combined with our high performance PLL of the MATRIX 4 SPM controller, performing QPlus experiments is both easier and more powerful compared to any other QPlus AFM platform.
In General
Each standard system can be used as a base to match the customer’s special requirements. The LT S represents the basic system configuration with the LT STM main chamber and an easy to operate fast entry chamber. Transferring samples and probe tips is made quick and reliable using a UHV wobble stick.
Omicron UHV systems are optimized for high throughput, reliable and secure operations. The wobble stick based transfer in the LT STM microscope enables for fast sample exchange (< 30 s) with the sample either cooled or at room temperature.
MULTIPROBE LT S
MULTIPROBE LT XP
MULTIPROBE LT XA
Customized Low-Temperature System Solutions
The modularity of the MULTIPROBE LT STM fits perfectly with the wide range of other modular solutions Omicron offers. Omicron has the unique flexibility, expertise and infrastructure to develop completely new system concepts to meet nearly every customer’s special requirements. Each system is designed to guarantee true UHV operation in the 10-11 mbar range and ease-of-use with secure operation, while retaining the LT STM’s high level of performance and versatility.
‘Sixty Symbols’ video
Video on dimer flipping using Omicron LT STM and MATRIX Control System.
Link to the 15:07 min version:
http://www.youtube.com/watch?v=KHLyrc-uoIk
Data courtesy of Philip Moriarty, Nanoscience Group, School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD