Orbital-Order Driven Ferroelectricity and Dipolar Relaxation Dynamics in Multiferroic GaMo${}_4$S${}_8$

K. Geirhos, S. Krohns, H. Nakamura +4

We present the results of broadband dielectric spectroscopy of GaMo${}_4$S${}_8$, a lacunar spinel system that recently was shown to exhibit non-canonical, orbitally-driven ferroelectr…