Accession Number:

ADA180341

Title:

Research on Cryogenic Vacuum Tunneling.

Descriptive Note:

Final rept. 1 Aug 84-31 Jan 87,

Corporate Author:

STANFORD UNIV CA EDWARD L GINZTON LAB OF PHYSICS

Personal Author(s):

Report Date:

1987-04-01

Pagination or Media Count:

7.0

Abstract:

The Scanning Tunneling Microscope has been designed and constructed to operate at low temperature. In liquid helium at 4 K we have mapped the spatial variation of the superconducting energy gap. It, also, has been 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 which enables us to study the spatial variations in structure and spectra. Keywords Low temperature Superconductor Energy gap Spatial variations Vibrational spectra Tunneling.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE