Physicists observe new property of matter

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Excitons tend to self-organize into an ordered array of microscopic droplets like a miniature pearl necklace. The wave-like interference pattern (right) reveals the spontaneous coherence of excitons. Credit: UCSD
Excitons tend to self-organize into an ordered array of microscopic droplets, like a miniature pearl necklace. The wave-like interference pattern (right) reveals the spontaneous coherence of excitons. Credit: UCSD

Physicists at the University of California, San Diego have for the first time observed the spontaneous production of coherence within "excitons," the bound pairs of electrons and holes that enable semiconductors to function as novel electronic devices.


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