Understanding the behavior of matter under extreme density-temperature conditions is a key issue for various fields of physics ranging from designing new materials, enabling inertial confinement fusion using high power lasers, or modeling planets both within and outside our solar system [1]. Among a few key elements, the high-temperature, high-pressure phase diagram of iron, the main component of the Earth’s core, has attracted a lot of attention in the past five decades. Despite this intense activity, several issues, such as the magnetic and transport properties at high pressures, the crystal structure at the Earth’s inner core, and the corresponding melting temperature, still remain the subject of intense debates [2].