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Attosecond coherent manipulation of electrons in tunneling microscopy

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Science  24 Jan 2020:
Vol. 367, Issue 6476, pp. 411-415
DOI: 10.1126/science.aaz1098

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Shining a light on STM

Whereas ultrafast light pulses can provide a window into the dynamics of some of the fastest processes in condensed matter systems, scanning tunneling microscopy (STM) provides snapshots of atomic-scale spatial resolution of surfaces. By irradiating the tunnel junction with carrier-enveloped, phase-stabilized femtosecond light pulses, Garg and Kern effectively combined the two methods to demonstrate a technique capable of both high temporal and high spatial resolution of the elementary processes in matter (see the Perspective by Aiello). By tracking the decay dynamics of plasmonic excitations on the surface of gold nanorods, they illustrate the power of the technique for the tracking and control of ultrafast electronic processes on the atomic scale.

Science, this issue p. 411; see also p. 368

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