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Exciting exciton breakthrough The research team generated an image of the exciton s probability cloud by measuring the wavefunction. Credit: OIST. Scientists have just experimentally measured the wave function of an exciton, and they’re excited about it – because they’ve been waiting a century. An exciton is an excited state of matter, created when an electron gains energy and jumps to a higher energy level. The negatively charged electron leaves behind a positively charged empty space (a “hole”), and the two are attracted to each other and begin to orbit each other – together forming an exciton. These electrically neutral “quasiparticles” are crucially important to semiconductors, which are key to applications such as solar cells, lasers and LEDs. ....
Okinawa Institute of Science and Technology Graduate University Highlights Excitons are excited particles that form when negatively charged electrons bind to positively charged holes Researchers have now used cutting-edge technology to capture the first ever image of the electron inside of an exciton The technique uses extreme ultraviolet light to break excitons apart and kick the electrons into the vacuum of an electron microscope By measuring the angle at which the electrons are ejected from the material, the research team determined how the electrons and holes orbit each other in an exciton Press Release In a world-first, researchers from the Okinawa Institute of Science and Technology Graduate University (OIST) have captured an image showing the internal orbits, or spatial distribution, of particles in an exciton – a goal that had eluded scientists for almost a century. ....
Physicists Have Caught Electron Orbits in an Exciton Quasiparticle For The First Time There s been a fabulous new achievement in particle physics. For the first time, scientists have managed to image the orbits of electrons within a quasiparticle known as an exciton - a result that has allowed them to finally measure the excitonic wave function describing the spatial distribution of electron momentum within the quasiparticle.
This achievement has been sought since the discovery of excitons in the 1930s, and while it may sound abstract at first, it could help in the development of various technologies, including quantum tech applications. ....
Physicists Get a Good Look at an 'Exciton' for the First Time gizmodo.com.au - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from gizmodo.com.au Daily Mail and Mail on Sunday newspapers.