Attosecond lasers provide the shortest light pulses yet, allowing observation of nature’s most short-lived events. Researchers have used these lasers for the first time to take snapshots of electrons jumping from silicon atoms into the conduction band of a semiconductor, the key event behind the transistor. They clocked the jump at 450 attoseconds and saw the rebound of the crystal lattice 60 femtoseconds later: a delay 120 times longer than the jump itself.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/dY6MZ6lrC5w/141211142433.htm
Scientists measure speedy electrons in silicon
11 diciembre 2014
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