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- W1972017949 abstract "We studied the magnetic and electronic properties of the insulating charge-transfer salt (TMTTF) 2 AsF 6 by electron spin resonance (ESR), SQUID magnetometer and optical conductivity measurements. For the first time, the lattice dynamics was investigated in the vicinity of the charge order transition. We found a splitting of the electron-molecular-vibration coupled totally symmetric intramolecular a g (v 3 ) mode below the charge-order transition at 100 K. From this result a charge disproportionation on the TMTTF molecular stacks of about 2:1 can be estimated. The spin degrees of freedom were investigated by ESR and SQUID. At high temperatures (TMTTF)2AsF6 behaves like a antiferromagnetic S=1/2 Heisenberg chain. Below 13 K, we observed an exponential decrease of the spin susceptibility indicating the phase transition into the spin-Peierls ground state." @default.
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- W1972017949 date "2004-04-01" @default.
- W1972017949 modified "2023-09-27" @default.
- W1972017949 title "Magnetic and optical studies of spin and charge ordering in (TMTTF)<sub>2</sub>AsF<sub>6</sub>" @default.
- W1972017949 doi "https://doi.org/10.1051/jp4:2004114010" @default.
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