Technion Team Achieves Control of Attosecond Tunneling Current
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A team led by Technion used two-color infrared laser pulses to control the direction of electron flow between a scanning tunneling microscope tip and a sample. The results were published in Nature Photonics. By adjusting the relative timing of the two beams, the study distinguished ultrafast currents from laser heating noise and, combined with a theoretical model, reconstructed a current pulse lasting 860 attoseconds. The microscope maintained a lateral resolution of about 2 nm in room-temperature air and could detect surface height changes smaller than 1 Å. The paper DOI is 10.1038/s41566-026-02021-y.
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- Phys.org Optics & PhotonicsPicksTechnion Team Precisely Controls Ultrafast Electron Flow in Scanning Tunneling Microscopes with Two-Color Laser
A team led by Technion used two-color infrared laser pulses to control the direction of electron flow between a scanning tunneling microscope tip and a sample, with results published in Nature Photonics. By adjusting the relative timing of the two beams, the study distinguished ultrafast current from laser-heating noise and, combined with a theoretical model, reconstructed a current pulse lasting 860 attoseconds. The microscope maintained a lateral resolution of about 2 nm in room-temperature air and could detect surface height changes smaller than 1 Å. The paper DOI is 10.1038/s41566-026-02021-y.
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