Construction and performance of a dilution-refrigerator based 
spectroscopic-imaging scanning tunneling microscope

Singh, U. R.; Enayat, M.; White, S. C.; Wahl, P.

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Construction and performance of a dilution-refrigerator based spectroscopic-imaging scanning tunneling microscope

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Wahl, P.
Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;

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Singh, U. R., Enayat, M., White, S. C., & Wahl, P. (2013). Construction and performance of a dilution-refrigerator based spectroscopic-imaging scanning tunneling microscope. Review of Scientific Instruments, 84(1): 013708.

Zitierlink: https://hdl.handle.net/21.11116/0000-000E-C5DF-9

Zusammenfassung

We report on the set-up and performance of a dilution-refrigerator based spectroscopic imaging scanning tunneling microscope. It operates at temperatures below 10 mK and in magnetic fields up to 14T. The system allows for sample transfer and in situ cleavage. We present first-results demonstrating atomic resolution and the multi-gap structure of the superconducting gap of NbSe2 at base temperature. To determine the energy resolution of our system we have measured a normal metal/vacuum/superconductor tunneling junction consisting of an aluminum tip on a gold sample. Our system allows for continuous measurements at base temperature on time scales of up to approximate to 170 h. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4788941]