Frustrated diamond-chain quantum $XXZ$ Heisenberg antiferromagnet in a magnetic field

Johannes Richter, Olesia Krupnitska, Taras Krokhmalskii +1

We consider the antiferromagnetic spin-1/2 $XXZ$ Heisenberg model on a frustrated diamond-chain lattice in a $z$- or $x$-aligned external magnetic field. We use the strong-coupling…