Scanning tunneling microscope with continuous flow cryostat sample cooling

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1148172· OSTI ID:509126

Behler, S; Rose, M K; Dunphy, J C; Ogletree, D F; Salmeron, M ^[1]; Chapelier, C ^[2]

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1. Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)
2. Departement de Recherche Fondamentale sur la Matiere Condensee, CEA/Grenoble, 38054 Grenoble Cedex 9 (France)

We have constructed an ultrahigh vacuum scanning tunneling microscope (STM) for operation in the temperature range 20{endash}300 K. The design consists of a vibration isolated sample holder mounted on a continuous flow cryostat. By rotation and linear motion of the cryostat, the sample can be positioned in front of various surface preparation and analysis instruments contained in a single vacuum chamber. A lightweight beetle-type STM head is lowered from the top onto the sample by a linear manipulator. To minimize helium convection in the cryostat, the entire vacuum system, including a liquid helium storage Dewar, can be tilted by a few degrees perpendicular to the cryostat axis, which improves the operation. The performance of the instrument is demonstrated by atomically resolved images of the Pd(111) surface and adsorbed CO molecules. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 509126
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 6 Vol. 68; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ADSORPTION
CARBON COMPOUNDS
CARBON MONOXIDE
CRYOSTATS
ELECTRON MICROSCOPES
PALLADIUM
PERFORMANCE
SCANNING ELECTRON MICROSCOPY
SORPTIVE PROPERTIES
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TUNNEL EFFECT