Author: Emily Conover / Source: Science News
BOSTON — Today’s nanoelectronics weather forecast: positively frigid.
Tiny electronic chips have been cooled to a record low temperature, dipping below a thousandth of a kelvin for the first time ever, scientists reported March 6 at a meeting of the American Physical Society.
To reach the frosty temperature, the scientists incorporated tiny bits of metal on the chip, which act like magnetic refrigerators. When scientists ramped magnetic fields up and down, those tiny refrigerators, made of the metal indium, helped cool the chip’s electrons to about 420 microkelvin — less than half a thousandth of a kelvin.
Other materials have been brought to much lower temperatures than the chilled…
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