Linear and Nonlinear Spectroscopy with the Tunable AC Scanning Tunneling Microscope
Abstract
The tunable microwave frequency AC scanning tunneling microscope (ACSTM) has opened the possibility of recording local spectra and local chemical information on insulator surfaces much as the conventional STM has done for metals and semiconductors. We describe the various types of spectroscopies that can be performed with the ACSTM. These include linear spectroscopies where the amplitude at the modulation frequency is measured as well as nonlinear spectroscopies utilizing the amplitudes of the harmonics of the modulation frequency generated in the tunneling junction. Spectroscopy in the microwave frequency range also enables heretofore unrealizable measurements on conducting substrates such as the rotational spectroscopy of a single adsorbed molecule.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 10, 1994
- Accession Number
- ADA285751
Entities
People
- L. A. Bumm
- M. M. Kamna
- Paul S. Weiss
- S. J. Stranick
Organizations
- Pennsylvania State University