Lindblad master equation : applications to tunnelling current

Lindblad master equation : applications to tunnelling current

In this thesis, we study an electron transport phenomenon observed in silicon coupled quantum dots called Lifetime-Enhanced Transport. We propose an energy-dependent tunnelling model to describe this phenomenon that extends previous works by adding the effects of a finite magnetic field and spin-orb...

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Bibliographic Details
Main Authors: Yuen Wei Rong, Joel, Yuen, Joel Wei Rong
Other Authors: Koh Teck Seng
Format: Final Year Project
Language:English
Published: 2019
Subjects:
DRNTU::Science::Physics
Online Access:http://hdl.handle.net/10356/77089
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Institution: Nanyang Technological University
Language: English
Description
Summary:In this thesis, we study an electron transport phenomenon observed in silicon coupled quantum dots called Lifetime-Enhanced Transport. We propose an energy-dependent tunnelling model to describe this phenomenon that extends previous works by adding the effects of a finite magnetic field and spin-orbit interaction. We explore the parameter space of our model through simulations and show that in certain parameter regimes, Lifetime-Enhanced Transport can no longer be observed. The simulations demonstrates that sufficiently (1) weak singlet (coherent) tunnel coupling strength, (2) transparent tunnel barrier and (3) strong spin-orbit interaction leads to the disappearance of Lifetime-Enhanced Transport.

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