Edge-channel transport through quantum wires with a magnetic quantum dot

Sim, Hyun Sub; Ihm, G.; Kim, N.; Lee, S.J.; Chang, Kee-Joo

doi:10.1016/s1386-9477(01)00457-x

Cited by 4 publications

(2 citation statements)

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“…As an application of previous works on the electronic structures of magnetic quantum structures, [1][2][3][4][10][11][12] we would like to focus our investigation on magnetoconductance behaviors in the quasi-1D wire, in the presence of both electrostatic modulation 9 and magnetic 10 modulations. There has been no attempt to characterize the effects of both modulations on the magnetoconductance.…”

Section: Purpose and Modelmentioning

confidence: 99%

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Magnetoconductance of a hybrid quantum ring: Effects of antidot potentials

2016

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The electronic structures and two-terminal magnetoconductance of a hybrid quantum ring are studied. The backscattering due to energy-resonance is considered in the conductance calculation. The hybrid magnetic-electric quantum ring is fabricated by applying an antidot electrostatic potential in the middle of a magnetic quantum dot. Electrons are both magnetically and electrically confined in the plane. The antidot potential repelling electrons from the center of the dot plays a critical role in the energy spectra and magnetoconductance. The angular momentum transition in the energy dispersion and the magnetoconductance behavior are investigated in consideration of the antidot potential variation. Results are shown using a comparison of the results of the conventional magnetic quantum dot.

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Section: Purpose and Modelmentioning

confidence: 99%

“…It shows resonant tunneling behaviors when edge channels are scattered by local electrostatic modulation, i.e. by electrostatic antidot potential 9 or local magnetic modulation such as a magnetic dot 10 or a ring. 11 …”

Section: Introductionmentioning

confidence: 99%