UHV LT-SPM and Raman System USM1400-TERS
- High resolution STM
- Sample Scanning and fixed tip for static optical focus
- Tunneling Spectroscopy (STS, IETS)
- Single molecule spectroscopy
- Confocal Raman micro spectroscopy option
- Tip Enhanced Raman Spectroscopy (TERS)
- Single molecule spectroscopy
STM
Scan Range at RT
( X / Y / Z) = ( 5 / 5 / 0.4 ) μm
Scan Range at 4K
( X / Y / Z) = ( 1 / 1 / 0.15 ) μm
Coarse Range
2mm in X and Y
Cryostat
‘open deck’ design leaving space for close-up optics with high numerical aperture
Space for customised in-situ optical elements – ‘optical bench’ on cold deck
Inverted design with cryostat underneath the SPM stage
Combining the best of two worlds: LHe bath cryostat plus He flow heat exchanger
Ideal for low and variable temperature ~3K to 20K
Up to 80K with counter heating. LN2 operation possible (80K to RT)
Tip Enhanced Raman Spectroscopy
Integrated solution with TII Nanofinder FLEX Raman Spectrometer (ambient)
in UHV focussing lens (aspherical (NA 0.3); on XYZ piezo positioner for optimal focus).
Spectrometer data
f = 350 or 500mm, F = 3.8
Spectral resolution
2cm-1 at 550nm, 1200G/mm
Laser options
Nd:YAG (532nm, 25mW); LD (785nm, 40mW);
customisations on request
UHV System
Load Lock Chamber, Preparation Chamber, STM Chamber
Options
E-Beam Heating for sample and tip
Argon Ion Sputter Source
Cooled Manipulator for Preparation Chamber
LEED,
deposition sources