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A high-pressure scanning tunneling microscope
University of Aarhus, Aarhus, Denmark.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
University of Aarhus, Aarhus, Denmark.
University of Aarhus, Aarhus, Denmark.
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2001 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 72, no 9, 3537-3542 p.Article in journal (Refereed) Published
Abstract [en]

We present the design and performance of a high-pressure scanning tunneling microscope (HP-STM), which allows atom-resolved imaging of metal surfaces at pressures ranging from ultrahigh vacuum (UHV) to atmospheric pressures (1 x 10(-10)-1000 mbar) on a routine basis. The HP-STM is integrated in a gold-plated high-pressure cell with a volume of only similar to0.5 l, which is attached directly to an UHV preparation/analysis chamber. The latter facilitates quick sample transfer between the UHV chamber and the high-pressure cell, and allows for in situ chemical and structural analysis by a number of analytical UHV techniques incorporated in the UHV chamber. Reactant gases are admitted to the high-pressure cell via a dedicated gas handling system, which includes several stages of gas purification. The use of ultrapure gasses is essential when working at high pressures in order to achieve well-defined experimental conditions. The latter is demonstrated in the case of H/Cu(110) at atmospheric H-2 pressures where impurity-related structures were observed. (C) 2001 American Institute of Physics.

Place, publisher, year, edition, pages
2001. Vol. 72, no 9, 3537-3542 p.
National Category
Condensed Matter Physics Other Physics Topics
URN: urn:nbn:se:uu:diva-235927DOI: 10.1063/1.1389497ISI: 000170647800007OAI: oai:DiVA.org:uu-235927DiVA: diva2:762458
Available from: 2014-11-11 Created: 2014-11-11 Last updated: 2014-11-11

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Österlund, Lars
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