Pressure tuning of itinerant magnetism in Mo$_{3}$Sb$_{7}$

Mo$_{3}$Sb$_{7}$ is a recently discovered itinerant antiferromagnet with a magnetic phase formed by spin dimerization at 53 K and ambient pressure, followed by a 2.3 K superconducting phase. In concert with the dimer pairing of S$=$1/2 Mo ions, a contraction of the crystalline lattice breaks the cubic symmetry. Here we use both high pressure x-ray single crystal diffraction and electrical transport techniques to investigate the magnetic behavior and map out the P-T phase diagram of Mo$_{3}$Sb$_{7}$. Our results demonstrate that the magnetic phase is eventually suppressed by high pressure, where the lattice structure returns to cubic. The disappearance of the antiferromagnetic phase in Mo$_{3}$Sb$_{7}$ could influence the evolution of the superconducting state.