Volume 46, Number 5, June I 1999
|Page(s)||667 - 670|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Singlet-triplet energy gap in the non-ferromagnetic modification of TDAE-
J. Stefan Institute - Jamova 39, 1000 Ljubljana, Slovenia
Accepted: 16 March 1999
The ESR intensity of the modification of TDAE- vanishes below 20 K in contrast to the α modification where the ESR intensity tremendously increases due to the ferromagnetic transition. The proton NMR spectra of the modification show a single temperature independent NMR line close to the Larmor frequency. Both the ESR and the NMR results can be understood by the existence of S=0 spin pairing in the ground state of the non-ferromagnetic modification of TDEA- at low temperatures.
PACS: 71.20.-b – Electron density of states and band structure of crystalline solids / 76.30.-v – Electron paramagnetic resonance and relaxation / 75.50.-y – Studies of specific magnetic materials
© EDP Sciences, 1999
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