Spinon Thermal Conductivity of –(CuO2)– Spin Chains in LiCuVO_4

摘要

The thermal conductivity K_(tot)~b of the quasi-one-dimensional (S = 1/2) Heisenberg antiferromagnet LiCuVO4 with uniform (–CuO_6–) spin chains aligned parallel to the b axis in a crystal with an orthorhombically distorted inverse spinel structure is measured in the temperature range 10–300 K. The spinon component K_m~(chain) of the thermal conductivity is separated out.