Spatial distribution of the incompressible strips at AB interferometer
Physica E: Low-Dimensional Systems and Nanostructures, cilt.42, sa.4, ss.1095-1098, 2010 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 42 Sayı: 4
- Basım Tarihi: 2010
- Doi Numarası: 10.1016/j.physe.2009.11.003
- Dergi Adı: Physica E: Low-Dimensional Systems and Nanostructures
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1095-1098
- Anahtar Kelimeler: Aharonov-Bohm interferometer, Quantum dots, Screening, Double-slit experiments, Phase lapses
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Kırklareli Üniversitesi Adresli: Evet
Özet
In this work, the edge physics of an Aharonov-Bohm interferometer (ABI) defined on a two dimensional electron gas, subject to strong perpendicular magnetic field B, is investigated. We solve the three dimensional Poisson equation using numerical techniques starting from the crystal growth parameters and surface image of the sample. The potential profiles of etched and gate defined geometries are compared and it is found that the etching yields a steeper landscape. The spatial distribution of the incompressible strips is investigated as a function of the gate voltage and applied magnetic field, where the imposed current is confined to. AB interference is investigated due to scattering processes between two incompressible "edge-states". © 2009 Elsevier B.V. All rights reserved.