A 10 mK scanning tunneling microscope operating in ultra high vacuum and high 
magnetic fields

Assig, M.; Etzkorn, M.; Enders, A.; Stiepany, W.; Ast, C. R.; Kern, K.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

A 10 mK scanning tunneling microscope operating in ultra high vacuum and high magnetic fields

MPS-Authors

/persons/resource/persons279915

Enders, A.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons279744

Ast, C. R.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280131

Kern, K.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Assig, M., Etzkorn, M., Enders, A., Stiepany, W., Ast, C. R., & Kern, K. (2013). A 10 mK scanning tunneling microscope operating in ultra high vacuum and high magnetic fields. Review of Scientific Instruments, 84(3): 033903.

Cite as: https://hdl.handle.net/21.11116/0000-000E-C731-A

Abstract

We present design and performance of a scanning tunneling microscope (STM) that operates at temperatures down to 10 mK providing ultimate energy resolution on the atomic scale. The STM is attached to a dilution refrigerator with direct access to an ultra high vacuum chamber allowing in situ sample preparation. High magnetic fields of up to 14 T perpendicular and up to 0.5 T parallel to the sample surface can be applied. Temperature sensors mounted directly at the tip and sample position verified the base temperature within a small error margin. Using a superconducting Al tip and a metallic Cu(111) sample, we determined an effective temperature of 38 +/- 1 mK from the thermal broadening observed in the tunneling spectra. This results in an upper limit for the energy resolution of Delta E = 3.5k(B)T = 11.4 +/- 0.3 mu eV. The stability between tip and sample is 4 pm at a temperature of 15 mK as demonstrated by topography measurements on a Cu(111) surface. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793793]