New Insights into the Reentry Behavior of Deuterated DCNQI Cu-Salts by Microwave Measurements

• Authors: S. Predak , H. Helberg , J. Von Schütz
• Languages of publication: EN

Abstracts

EN

The microwave conductivity of the copper salt of DCNQI (N,N'-Di­cyanoquinodiimine) with two methyl side groups (undeuterated, h_{8}), the fully deuterated salt (d_{8}), the salt with only the methyl groups deuterated and of alloys of undeuterated and deuterated salts was measured. The mi­crowave conductivity (10.2 GHz) qualitatively follows the dc conductivity. The difference is in the window of diminished conductivity between phase transition and reentry, where the microwave conductivity is higher than the dc conductivity. This indicates the existence of a crystal fraction with higher (metallic) conductivity (portion: ≈ 1‰) not seen by dc methods.

Keywords

EN

72.80.Le; 72.60.+g; 78.70.Gq

Discipline

• 78.70.Gq: Microwave and radio-frequency interactions
• 72.60.+g: Mixed conductivity and conductivity transitions
• 72.80.Le: Polymers; organic compounds (including organic semiconductors)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 4-5
• Pages: 791-795

Dates

published

1995-04

Contributors

author

S. Predak

• Third Physical Institute, University of Göttingen, Germany

author

H. Helberg

• Third Physical Institute, University of Göttingen, Germany

author

J. Von Schütz

• 3. Physical Institute, University of Stuttgart, Germany

Identifiers

DOI

10.12693/APhysPolA.87.791