Phase transition in the oxyhalides TiOBr and TiOCl under pressure
What is it about?
The closure of the Mott-Hubbard gap is discussed, i.e., the gap is filled with additional electronic states extending down to the far-infrared range. The gap closure coincides with a structural phase transition.
Why is it important?
The results of pressure-dependent transmittance measurements on TiOBr at low temperatures reveal similar effects at 23 K, where the compound is in the spin-Peierls phase at ambient pressure.
The following have contributed to this page: Priv.-Doz. Dr. Andreas Schönleber