CE42 - Capteurs, instrumentation

Spin-valley states preparation and measurement at the nanoscale using fast electrons and photons – SpinE

Submission summary

The spin-valley physics in transition metal dichalcogenide two-dimensional monolayers has attracted attention due to its possible application in quantum information processing. Two distinct spin-split valleys occur due the non-centrosymmetric structure and spin-orbit coupling. Excitations in each valley can be created by circularly polarized laser and may be sufficiently long-lived to be manipulated. The role of atomic defects and confinement in excitation decay is under intense debate. Understanding decay is hindered by the spatial resolution limit of optical techniques. SpinE will fill this critical gap by designing new spectroscopy approaches coupling electron and photon techniques in an electron microscope. Laser pulses will be used to selectively create excited states, which will be detected using time-resolved electron spectroscopy. The atomic resolution of the electron microscopes will allow the study of the role of defects, interfaces and confinement in excitation decay.

Project coordination

Luiz TIZEI (Laboratoire de Physique des Solides)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

LPS Laboratoire de Physique des Solides

Help of the ANR 262,418 euros
Beginning and duration of the scientific project: December 2020 - 48 Months

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