Interplay of metamagnetic and structural transitions in Ca${}_{2-x}$Sr${}_x$RuO${}_4$

Rafael Roldan, Andreas Ruegg, Manfred Sigrist

Metamagnetism in layered ruthenates has been interpreted as a novel kind of quantum critical behavior. In an external magnetic field, Ca${}_{2-x}$Sr${}_x$RuO${}_4$ undergoes a metamagnet…