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LASSP -  Laboratory of Atomic and Solid State Physics

Cornell Laboratory for Atomic and Solid State Physics

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Kin Fai Mak, Jie Shan research team raise the temperature for exciton condensation

New Cornell-led research is pointing the way toward an elusive goal of physicists – high-temperature superfluidity – by exploring excitons in atomically thin semiconductors.

An exciton, which consists of a bound electron-hole pair, is a mobile bundle of energy that is able to exist in insulators and semiconductors. By using excitons with large binding energy, the researchers were able to increase the condensation temperature a hundredfold, from about 1 kelvin (-457.87 F) to about 100 kelvins (-279.67 F). Room temperature is around 295 kelvins.

While high-temperature superfluidity remains to be demonstrated, this robust Bose-Einstein condensate could result in brighter, more efficient lighting systems that outshine conventional LEDs. Read the full article here.