Research on cryogenic vacuum tunneling. Final report, 1 August 1984-31 January 1987

Technical Report · Wed Apr 01 04:00:00 EST 1987

OSTI ID:6292289

Quate, C F

The scanning tunneling microscope (STM) was designed and constructed to operate at low temperature. In liquid helium at 4K the spatial variation of the superconducting energy gap was mapped. It, also, was used for the first time to record the vibrational spectra of a molecule adsorbed on graphite and to image the molecule itself. The STM has also been used to record the phonon spectra of the graphite substrate. This is a new tool for low-temperature studies that enables study of the spatial variations in structure and spectra.

• Research Organization: Stanford Univ., CA (USA). Edward L. Ginzton Lab.
• OSTI ID: 6292289
• Report Number(s): AD-A-180341/0/XAB; GL-4194
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON
CRYOGENICS
CRYOPUMPS
DISTRIBUTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTAL MINERALS
ELEMENTS
EQUIPMENT
GRAPHITE
LABORATORY EQUIPMENT
MICROSCOPES
MINERALS
NONMETALS
PHONONS
PHYSICAL PROPERTIES
PUMPS
QUASI PARTICLES
SPATIAL DISTRIBUTION
SPECTRA
SUBSTRATES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TUNNEL EFFECT
ULTRALOW TEMPERATURE
VACUUM PUMPS