Vacancy-induced spin texture in a one dimensional $S=1/2$ Heisenberg antiferromagnet

Sambuddha Sanyal, Argha Banerjee, Kedar Damle

We study the effect of a missing spin in a one dimensional $S=1/2$ antiferromagnet with nearest neighbour Heisenberg exchange $J$ and six-spin coupling $Q=4qJ$ using Quantum Monte-…