
Managed single-electron switch permits time-resolved excited-state spectroscopy of particular person molecules
Set-up and pattern preparation Experiments have been carried out with a home-built atomic power microscope outfitted with a qPlus sensor33 (resonance frequency, f0 = 30.0 kHz; spring fixed, okay ≈ 1.8 kNm−1; high quality issue, Q ≈ 1.9 × 104) and a conductive Pt-Ir tip. The microscope was operated beneath ultrahigh vacuum (base stress, P < 10−10 mbar) at T ≈ 8 Ok in frequency-modulation mode, during which the frequency…