Physicists’ Room-Temperature Research Leads to ‘Exciting’ Possibilities for Science
As if taken from a Star Wars or Star Trek movie script, the term “exciton” (pronounced ˈek-sə-tän) comes from condensed matter physics. Excitons are bound states of electrons and electron holes attracted to each other by electrostatic force. They can be created both by light and transformed into light. Electrically neutral, these quasiparticles exist in systems like insulators and semiconductors, but University of California San Diego physicists have established a way that may bring them into future cell phones and laptops.