Accession Number:

ADA163573

Title:

Properties of Organic Superconductors.

Descriptive Note:

Final rept. Sep 82-Sep 83,

Corporate Author:

IBM RESEARCH LAB SAN JOSE CA

Personal Author(s):

Report Date:

1983-09-01

Pagination or Media Count:

23.0

Abstract:

The major results were 1. Discovery of a new class of organic superconductors based on the BEDT-TTF molecule. This discovery has proven to be very important since recent chemical modification of our BEDT-TTF compound has led to a superconducting transition temperature of 8K, quite high for an organic solid. This offers the possibility that superconductivity can be found at temperatures greater than inorganic materials. The characterization of the BEDT-TTF2X superconductors included transport, magnetic and structural properties and these are discussed in the reference. 2. Measurement of the far IR properties of TMTSF2 C1O4. These results proved that a large superconductivity gap does not exist in TMTSF2 C1O4, contrary to previous speculations and erroneous interpretation of data by other workers. This rules out the possibility of superconducting fluctuations in the TMTSF2X class of organic superconductors. 3. Observation of now features of the magnetic-field-induced transition in TMTSF2 C1O4. The field-induced-transition FIT is quite anomalous and appears to be unique in solid state physics. The Hall effect and the magnetoresistance of TMTSF2 C1O4 was measured as a function of magnetic field up to 20T.

Subject Categories:

  • Organic Chemistry
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE