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DOE OSTI · 22482097

A triple quantum dot based nano-electromechanical memory device

Pozner, R.·Lifshitz, E.
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Abstract

Colloidal quantum dots (CQDs) are free-standing nano-structures with chemically tunable electronic properties. This tunability offers intriguing possibilities for nano-electromechanical devices. In this work, we consider a nano-electromechanical nonvolatile memory (NVM) device incorporating a triple quantum dot (TQD) cluster. The device operation is based on a bias induced motion of a floating quantum dot (FQD) located between two bound quantum dots (BQDs). The mechanical motion is used for switching between two stable states, “ON” and “OFF” states, where ligand-mediated effective interdot forces between the BQDs and the FQD serve to hold the FQD in each stable position under zero bias. Considering realistic microscopic parameters, our quantum-classical theoretical treatment of the TQD reveals the characteristics of the NVM.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS77 NANOSCIENCE AND NANOTECHNOLOGYEQUIPMENTLIGANDSMEMORY DEVICESQUANTUM DOTS

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Pozner, R., Lifshitz, E.. 2015-09-14. A triple quantum dot based nano-electromechanical memory device. https://doi.org/10.1063/1.4930826

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