As electronic devices shrink, the interaction between electrons and the silicon crystal lattice, described in terms of 'quasiparticles', is a central issue. Ultrashort laser pulses can track the birth of such a quasiparticle.
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Leitenstorfer, A. Birth of a quasiparticle. Nature 426, 23–24 (2003). https://doi.org/10.1038/426023b
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DOI: https://doi.org/10.1038/426023b
