Author/Authors :
Fertey، P. نويسنده , , P. and Canadell، نويسنده , , E. and Pouget، نويسنده , , J.P. and Sayetat، نويسنده , , F. and Lenoir، نويسنده , , C. and Batail، نويسنده , , P. and Muller، نويسنده , , J.، نويسنده ,
Abstract :
We report a diffractometric determination of the thermal dependence of the triclinic lattice parameters of (TMTSF)2ClO4. Low temperature measurements show that c and γ differ significantly in the quenched (Q) and relaxed (R) states. Tight binding calculations of the band structure of the organic sublattice, neglecting the ClO4− potential, show that the variations of γ between the Q and R states do not affect appreciably the shape of the Fermi surface (FS). We thus propose that the nesting properties of the FS are destroyed below the anion ordering transition by the b∗/2 component of the ClO4− Coulomb potential.
