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Tracing Attosecond Electron Emission from a Nanometric Metal Tip by Philip Dienstbier; Lennart Seiffert; Timo Paschen; Andreas Liehl; Alfred Leitenstorfer; Thomas Fennel; Peter Hommelhoff is a Physics and Astronomy article available to read on EtoBox.

What is Tracing Attosecond Electron Emission from a Nanometric Metal Tip about?

Solids exposed to intense electric fields release electrons through tunnelling. This fundamental quantum process lies at the heart of various applications, ranging from high brightness electron sources in d.c. operation 1 , 2 to petahertz vacuum electronics in laser-driven operation 3 , 4 , 5 , 6 , 7 , 8 . In the latter process, the electron wavepacket undergoes semiclassical dynamics 9 , 10 in the strong oscillating laser field, similar to strong-field and attosecond physics in the gas phase 11 , 12 . There, the subcycle electron dynamics has been determined with a stunning precision of tens of attoseconds 13 , 14 , 15 , but at solids the quantum dynamics including the emission time window has so far not been measured. Here we show that two-colour modulation spectroscopy of backscattering electrons 16 uncovers the suboptical-cycle strong-field emission dynamics from nanostructures, with attosecond precision. In our experiment, photoelectron spectra of electrons emitted from a sharp metallic tip are measured as function of the relative phase between the two colours. Projecting the solution of the time-dependent Schrödinger equation onto classical trajectories relates phase-dependen

Who reads Tracing Attosecond Electron Emission from a Nanometric Metal Tip?

Author

Philip Dienstbier; Lennart Seiffert; Timo Paschen; Andreas Liehl; Alfred Leitenstorfer; Thomas Fennel; Peter Hommelhoff

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Physics and Astronomy (Physical Sciences)