{mu}SR studies of Li-doped La{sub 2}CuO{sub 4}

Magnetic properties of the Li-doped cuprates La{sub 2}Cu{sub 1{minus}x}Li{sub x}O{sub 4} (where x = 0.01, 0.05, 0.10, 0.45, and 0.50) have been studied by {mu}SR. For low Li concentrations (x {le} 0.10) the authors find a rapid suppression of T{sub N} as x increases, but little change in the magnitude and temperature dependence of the AFM order parameter. This indicates that Li doping effectively destroys AFM without strongly affecting the onsite Cu moments and the shape of the spinwave excitation spectrum. For high Li concentrations they find magnetic clusters in about 15% of the sample volume; the remaining volume is non-magnetic, suggesting possible single-state formation.