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Isotope Effect of Thermopower in the TTFCOONH 3 Ph Single Crystal
Author(s) -
Kobayashi Yuka,
Sumi Satoshi,
Terauchi Takeshi,
Iwai Hideo,
Tanaka Akihiro,
Matsushita Yoshitaka,
Sato Akira
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201402055
Subject(s) - chemistry , kinetic isotope effect , carboxylate , single crystal , seebeck coefficient , doping , crystal structure , tetrathiafulvalene , isotope , ion , inorganic chemistry , crystallography , stereochemistry , electrical resistivity and conductivity , molecule , organic chemistry , deuterium , condensed matter physics , physics , engineering , quantum mechanics , electrical engineering
The thermopowers of single‐crystalline anilinium tetrathiafulvalene‐2‐carboxylate (TTFCOONH 3 Ph) and its deuteriated form (TTFCOOND 3 Ph) have been examined at room temperature, and a significant isotope effect was found: 102 μV/K for TTFCOONH 3 Ph, and 48 μV/K for TTFCOOND 3 Ph, which amounts to a difference of a factor of around two. The origin of the difference, for example, X‐ray crystal structure and doping level, was examined based on chemical and physical characterizations, and it was found that very low ion transport drastically enhances the thermopower of holes, giving rise to the large isotope effect.