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Spin Pumping in Lateral Double Quantum Dot Systems

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Date Issued:
2012
Abstract/Description:
Electron transport in single lateral quantum dot (QD) and parallel lateral doublequantum dot (DQD) systems is modeled using semiclassical rate equations. The Zeemaneffect, in conjunction with resonant tunneling, is used to select the spin of electronsinvolved in transport. We show adiabatic spin pumping by periodic variation of thesystems' confining parameters, namely the quantum point contacts (QPCs) dictating theboundaries of the dots, and the gate voltage applied to each dot. The limitations ofadiabatic spin pumping are subsequently examined by counting the average spin pumpedper cycle when frequency and interdot capacitance are adjusted.
Title: Spin Pumping in Lateral Double Quantum Dot Systems.
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Name(s): Pelton, Sabine, Author
Mucciolo, Eduardo, Committee Chair
Ishigami, Marsahir, Committee Member
Leuenberger, Michael, Committee Member
, Committee Member
University of Central Florida, Degree Grantor
Type of Resource: text
Date Issued: 2012
Publisher: University of Central Florida
Language(s): English
Abstract/Description: Electron transport in single lateral quantum dot (QD) and parallel lateral doublequantum dot (DQD) systems is modeled using semiclassical rate equations. The Zeemaneffect, in conjunction with resonant tunneling, is used to select the spin of electronsinvolved in transport. We show adiabatic spin pumping by periodic variation of thesystems' confining parameters, namely the quantum point contacts (QPCs) dictating theboundaries of the dots, and the gate voltage applied to each dot. The limitations ofadiabatic spin pumping are subsequently examined by counting the average spin pumpedper cycle when frequency and interdot capacitance are adjusted.
Identifier: CFE0004334 (IID), ucf:49435 (fedora)
Note(s): 2012-05-01
M.S.
Sciences, Physics
Masters
This record was generated from author submitted information.
Subject(s): Adiabatic pumping -- quantum dot -- spin pump -- coulomb blockade regime -- parametric pumping -- spin turnstile -- spin current -- quantum cellular dot automata
Persistent Link to This Record: http://purl.flvc.org/ucf/fd/CFE0004334
Restrictions on Access: public 2012-05-15
Host Institution: UCF

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