Magnetization of Two-Dimensional Quantum Rings

We use spin-density-functional theory to study the magnetization of quantum rings. We study in this work two-dimensional systems containing up to 24 electrons in a perpendicular magnetic field. Increasing the field leads to quasiperiodic Aharonov-Bohm oscillations and to different magnetic regimes w...

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Hauptverfasser: Aichinger, M, Chin, S A, Krotscheck, E, Rasanen, E
Format: Tagungsbericht
Sprache:eng
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung:We use spin-density-functional theory to study the magnetization of quantum rings. We study in this work two-dimensional systems containing up to 24 electrons in a perpendicular magnetic field. Increasing the field leads to quasiperiodic Aharonov-Bohm oscillations and to different magnetic regimes with characteristic spin properties. We find several phases reminiscent of both integer and fractional quantum-Hall states. We discuss the properties of these states in quantum rings and suggest possible measurements to observe them experimentally.
ISSN:0094-243X
DOI:10.1063/1.2355226