Ultimate Probing at the Nanoscale • Four Fully Independent Scanning Tunnelling Microscopes • Excellent STM Performance for Spectroscopy and Manipulation • High Resolution SEM Navigation

mate Nanoprobing at Low Temperatures 500 µm 500 µm 500 µm 200 nm Sequence of SEM images taken at T < 5 K, showing the coarse positioning of the four STM probes and high resolution imaging on Au islands on carbon. The Low Temperature (LT) NANOPROBE defines a new class of analytical instrumentation that merges SEM navigated nanoprobing at LHe temperatures with high performance STM imaging, spectroscopy and manipulation. A major challenge in the development of novel devices in nano- and molecular electronics is their interconnection with larger scale electrical circuits required to control and characterize...

The low beam energy performance of the UHV Gemini Column minimises damage to sensitive samples and enables imaging of nearly insulating samples by minimising charging effects at energies in the few keV range. 4-point electrical transport measurement at T < 5 K. Wires with a width of 1 pm exhibit linear transport behavior. Curves have been taken at different distances between the inner electrodes. SEM imaging parameters: EKIN = 5.00 kV, H. Marbach, Univ. of Erlangen (Germany). For the navigation of four independent STM probes, simultaneous SEM imaging is indis- pensable to bridge dimensions from...

Technical Details SPM 1 SPM 4 UHV Gemini column SPM 2 SPM 3 Bath cryostat and thermal shielding in the LT NANOPROBE LHe bath cryostat with T < 5K LN2 cooling Principle schematic showing the LT NANOPROBE cooling. 4 Independent SPM's Cooling Down to T < 5K Magnetic Field The microscope stage carries four individual SPM modules with independent and guided 3D coarse positioning of XYZ = 5x5x3 mm. The sample can be independently positioned by XY = 4x4 mm. Omicron´s patented piezo-electric inertia drives provide highly reliable and efficient navigation with step sizes from a few tens of nm´s up to...

+ dI/dU [a.u.] UGap STS on Au(111) using a Nb tip at T < 5 K reveales the superconducting gap of Nb with approx. 3 meV width. IT - + - -+ ++ UGap UGap UGap UGap Parameters: fMOD = 540 Hz, UMOD = 140 µV, TSi-diode = 4.8 K. Deviations from BCS curve shape -8 UGap UGap UGap -6 -4 -2 0 2 UGap [mV] 4 6 8 are due to tip contamination and related tunnelling processes (no tip preparation applied). < 2 pm noise II ITTT 15.0 ≈ 6 pm corrugation 10.0 Height [pm] - -+ ++ 3.0 mV 5.0 0 -5.0 -10.0 -15.0 0 2.5 5.0 7.5 10.0 12.5 Position [nm] 15.0 17.5 20.0 The schematic is showing the function principle of signal...

Headquarters: Omicron NanoTechnology GmbH Limburger Str. 75 65232 Taunusstein, Germany Tel. +49 (0) 61 28 / 987 - 0 Fax +49 (0) 61 28 / 987 - 185 Web: www.omicron.de e-mail: [email protected] Minneapolis Pittsburgh East Grinstead Linköping Moscow Poznan Beijing We have agents and partners worldwide – please check our website to find your nearest contact. Seoul Tokyo Taipei Mumbai Omicron NanoTechnology is part of the Oxford Instruments Group. For more information: www.oxford-instruments.com or just send us an e-mail: [email protected] LT NANOPROBE 541-V03/Mar12 Printed by Druckerei und Verlag...