Gapless Spin Liquid Behavior in A Kagome Heisenberg Antiferromagnet with Randomly Distributed Hexagons of Alternate Bonds

Jiabin Liu, Long Yuan, Xuan Li +4

We demonstrate that the new single crystal of YCu${}_3$[OH(D)]${}_{6.5}$Br${}_{2.5}$ (YCOB) is a kagome Heisenberg antiferromagnet (KHA) without evident orphan spins ($\ll$ 0.8\%). The s…