With the help of ultrashort laser pulses, physicists have been able to verify fashion electronic vibrations tamaranai network of magnetite and prove that these mods are involved in the mechanism of the transition of the Verve. This discovery will bring scientists to unravel the mechanism of the transition of magnetite from a conductive to dielectric condition. Work published in the journal Nature Physics.
Magnetite is a widespread mineral black colour from the class of oxides, it can be found even in the human brain. Despite the wide distribution, it has the property, the nature of which physicists still cannot fully explain. At temperatures below 125 Kelvin the atoms of magnetite change its crystalline structure so that the mineral is transferred from metal into the dielectric state. This phase transition is called the transition of Verve. It was opened in 1939, but to explain it, scientists can’t so far.
Over the past decade physicists have made some discoveries that bring them closer to understanding the structural mechanisms of the transition of Verve. Using x-ray diffraction analysis, they foundthat the low-temperature structure of magnetite is ordered as a three-pole network of polarons, they are called timername.
When the temperature of ionic crystals due to complex interactions within its structure, it is possible to initiate different modes of spatial oscillations (or waves) of electrons within the crystal. Perhaps these fluctuations are a driver of restructuring of the crystal lattice during the transition from metallic to dielectric state.