Suppression of 3D-ordering by defects in the $S=1/2$ frustrated chain magnet LiCuVO${}_4$

L. A. Prozorova, S. S. Sosin, L. E. Svistov +6

We report on a heat capacity study of high quality single crystal samples of \lcvo\ -- a frustrated spin $S=1/2$ chain system -- in magnetic field amounting to 3/4 of the saturatio…