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

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1.4788941.pdf (968.5Kb)
Date
30/01/2013
Author
Singh, Udai Raj
Enayat, Mostafa
White, Seth C.
Wahl, Peter
Keywords
Scanning tunneling microscopy
Aluminium
Magnetic fields
Superconductivity
Metadata
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Abstract
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 ≈170 h.
Citation
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 , vol. 84 , no. 1 , 013708 . https://doi.org/10.1063/1.4788941
Publication
Review of Scientific Instruments
Status
Peer reviewed
DOI
https://doi.org/10.1063/1.4788941
ISSN
0034-6748
Type
Journal article
Rights
Copyright 2013, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Review of Scientific Instruments, Vol 84, Issue 1, and may be found at: http://scitation.aip.org/content/aip/journal/rsi/84/1/10.1063/1.4788941
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4336

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