Severe Fermi Surface Reconstruction at a Metamagnetic-Transition in Ca${}_{2-x}$Sr${}_x$RuO${}_4$ (for $0.2\le x\le 0.5$)

L. Balicas, S. Nakatsuji, D. Hall +4

We report an electrical transport study in Ca${}_{2-x}$Sr${}_x$RuO${}_4$ single crystals at high magnetic fields ($B$). For $x=0.2$, the Hall constant $R_{xy}$ decreases sharply at an…