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Updated: May 31, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Theoretical study of the time-dependent phenomenon of photon-assisted tunneling through a charged quantum dot
Masakazu Muraguchi1, Kenji Shiraishi, Takuma Okunishi
1Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai, Tsukuba, Japan.
Abstract:
We have studied numerically the time-dependent photon-assisted tunneling (TD-PAT) process for electrons confined in quantum dots (QDs) by employing the finite difference method under the scheme of the TD-density functional theory (DFT). We have found the quasi-dark state (quasi-DS), where the injected electron remains in the QD. By varying the barrier thickness, we have calculated the TD profile of the electron density in a QD, and found the optimal geometry of the lozenge QD. We have also discussed how the charged QD modulates the PAT process.
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