DocumentCode :
2646553
Title :
Transmission through multiple nanoscale rings with Zeeman-split quantum dots
Author :
Cutright, James B. ; Joe, Yong S. ; Hedin, Eric R.
Author_Institution :
Dept. of Phys. & Astron., Ball State Univ.., Muncie, IN, USA
fYear :
2012
fDate :
22-25 May 2012
Firstpage :
1
Lastpage :
4
Abstract :
A nanoscale ring structure, typically referred to as an Aharonov-Bohm (AB) ring, with a quantum dot (QD) embedded in each arm serves a unit cell in a chain-like structure. The transmission through the device is presented as a function of the number of rings in the chain. Zeeman-splitting of the QD energy levels is also modeled and its effects are analyzed. Distinct transmission bands form as the ring number increases. Zeeman splitting causes the number of bands to double, and to cross and diverge as the magnitude of the Zeeman effect increases. I-V plots show a transition from semiconductor characteristics to ohmic properties as the Zeeman splitting approaches the nominal energy value of the QD´s.
Keywords :
Aharonov-Bohm effect; Zeeman effect; embedded systems; metal-insulator transition; nanostructured materials; semiconductor quantum dots; spin polarised transport; AB ring; Aharonov-Bohm ring; I-V plots; QD energy levels; Zeeman effect; Zeeman-split quantum dots; bands number; chain-like structure; distinct transmission bands; multiple nanoscale ring structure; nominal energy value; ring number; semiconductor characteristics; unit cell; Conductors; Energy states; Magnetic fields; Nanoscale devices; Photonic band gap; Quantum dots; Structural rings; Aharonov-Bohm rings; Zeeman spin splitting; current-voltage; quantum dots; transmission;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computational Electronics (IWCE), 2012 15th International Workshop on
Conference_Location :
Madison, WI
Print_ISBN :
978-1-4673-0705-5
Type :
conf
DOI :
10.1109/IWCE.2012.6242827
Filename :
6242827
Link To Document :
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