Development of an ultrahigh vacuum scanning tunneling microscope cooled bysuperfluid He-4

Citation
Y. Kondo et al., Development of an ultrahigh vacuum scanning tunneling microscope cooled bysuperfluid He-4, REV SCI INS, 72(7), 2001, pp. 2977-2983
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
REVIEW OF SCIENTIFIC INSTRUMENTS
ISSN journal
0034-6748 → ACNP
Volume
72
Issue
7
Year of publication
2001
Pages
2977 - 2983
Database
ISI
SICI code
0034-6748(200107)72:7<2977:DOAUVS>2.0.ZU;2-B
Abstract
We have developed an ultrahigh vacuum (UHV) scanning tunneling microscope ( STM) cooled by superfluid He-4. This microscope is integrated with a soleno id and split-pair superconducting magnet. The STM can be operated at 300 >T >4 K in a rotatable magnetic field of up to 8 T perpendicular to, and 1.5 T parallel to the sample surface. Moreover, tips and samples may be changed without venting the UHV system. The performance of the STM was confirmed b y obtaining atomic resolution images of Si reconstructed surfaces at low te mperatures. The STM performance was unaffected by the application of high m agnetic fields. (C) 2001 American Institute of Physics.