Fano Core-Hole Clock

A Fano-interference-based core-hole clock method for measuring ultrafast charge transfer times, revealing charge transfer dynamics more accurately than conventional core-hole clock models.

Liu, Ji · Kimberg, Victor V. · Travnikova, Oksana · Guillemin, Renaud · Zhang, Man · Krasnov, Pavel O. · Odelius, Michael · Püttner, Ralph · Simon, Marc · Marchenko, Tatiana

Physical Review Letters 2026

Specifications

Charge transfer time

{'zh': '27', 'en': '27'} fs

Advantages

More accurate timing

Captures coherent coupling between localized excitons and delocalized CT continua, revealing a timescale underestimated by conventional models.

No assumptions on CT mechanism

Directly observes Fano interference, eliminating the need for assumptions about the charge transfer pathway, making it suitable for complex molecular systems.

Applications

• Conductive organic polymers：Used to validate the FCHC method or study their ultrafast charge transfer dynamics.
• Ultrafast spectroscopy：Provides a new method for measuring charge transfer times in ultrafast spectroscopy.
• Charge transfer studies：Used to measure charge transfer times more accurately in complex systems.