Presentation Title
Transmission through a Multiple I/O Double-Ring Nanoscale Structure
Faculty Mentor
Eric Hedin
Start Date
23-11-2019 9:45 AM
End Date
23-11-2019 10:00 AM
Location
Markstein 303
Session
oral 1
Type of Presentation
Oral Talk
Subject Area
physical_mathematical_sciences
Abstract
A tight-binding model of the Schrodinger equation is used to analyze the electron transmission properties of a nano-scale double-ring structure (with six embedded quantum dots per ring). The structure's transmission is studied with inputs at 3 different sites and outputs at 4 different sites. A high degree of variation in the system performance is observed, based on the specific choice of input/output conditions. This system can also provide a model for molecular naphthaline structure. A primary emphasis of the analysis of this system is the dependence of transmission to a particular output site as a function of coupling to other output sites. Interference between conduction paths produces transmission variation with both negative and positive dependence on output coupling strengths to other output leads. Magnetic flux through the ring structure also plays a role in the transmission properties through the Aharonov-Bohm effect.
Transmission through a Multiple I/O Double-Ring Nanoscale Structure
Markstein 303
A tight-binding model of the Schrodinger equation is used to analyze the electron transmission properties of a nano-scale double-ring structure (with six embedded quantum dots per ring). The structure's transmission is studied with inputs at 3 different sites and outputs at 4 different sites. A high degree of variation in the system performance is observed, based on the specific choice of input/output conditions. This system can also provide a model for molecular naphthaline structure. A primary emphasis of the analysis of this system is the dependence of transmission to a particular output site as a function of coupling to other output sites. Interference between conduction paths produces transmission variation with both negative and positive dependence on output coupling strengths to other output leads. Magnetic flux through the ring structure also plays a role in the transmission properties through the Aharonov-Bohm effect.