Abstract
Electronic and phonon coherence are usually measured in different ways because their time-scales are very different. In this paper we simultaneously measure the electronic and phonon coherence using the interference of the electron-phonon correlated states induced by two phase-locked optical pulses. Interferometric visibility showed that electronic coherence remained in a semiconducting GaAs crystal until ∼40 fs; in contrast, electronic coherence disappeared within 10 fs in a semimetallic Bi crystal at room temperature, differing substantially from the long damping time of its phonon coherence, in the picosecond range.
Original language | English |
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Article number | 4456 |
Journal | Scientific reports |
Volume | 4 |
DOIs | |
Publication status | Published - Mar 25 2014 |
ASJC Scopus subject areas
- General