Title: Holon Wigner Crystal in a Lightly Doped Kagome Quantum Spin Liquid,
Abstract: We address the problem of a lightly doped spin-liquid through a large-scale
density-matrix renormalization group (DMRG) study of the $t$-$J$ model on a
Kagome lattice with a small but non-zero concentration, $\delta$, of doped
holes. It is now widely accepted that the undoped ($\delta=0$) spin 1/2
Heisenberg antiferromagnet has a spin-liquid groundstate. Theoretical arguments
have been presented that light doping of such a spin-liquid could give rise to
a high temperature superconductor or an exotic topological Fermi liquid metal
(FL$^\ast$). Instead, we infer that the doped holes form an insulating
charge-density wave state with one doped-hole per unit cell - i.e. a Wigner
crystal (WC). Spin correlations remain short-ranged, as in the spin-liquid
parent state, from which we infer that the state is a crystal of spinless
holons (WC$^\ast$), rather than of holes. Our results may be relevant to Kagome
lattice Herbertsmithite $\rm ZnCu_3(OH)_6Cl_2$ upon doping.