A New State of Matter: The Key to Radiation-Proof Computing and Spintronics?
Physicists at the University of California, Irvine, have experimentally confirmed a new state of quantum matter, previously only theoretical. This discovery, centered on a material called hafnium pentatelluride (HfTe₅), has significant implications for developing next-generation electronics, particularly for deep space exploration. This new phase is a type of excitonic insulator—a state where electrons and the “holes” they leave behind spontaneously pair up. Uniquely, this is a spin-triplet excitonic insulator, where the paired electrons and holes have spins oriented in the same direction. When subjected to an intense magnetic field of up to 70 Teslas, the material’s ability to conduct electricity drops sharply, signaling its transition into this exotic state. ...