A high-pressure scanning tunneling microscope
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
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.
Condensed Matter Physics Other Physics Topics
IdentifiersURN: urn:nbn:se:uu:diva-235927DOI: 10.1063/1.1389497ISI: 000170647800007OAI: oai:DiVA.org:uu-235927DiVA: diva2:762458