Magnetic-field-induced breakdown of quasi-one-dimensional quantum-wire quantization
- 15 May 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 49 (20) , 14782-14785
- https://doi.org/10.1103/physrevb.49.14782
Abstract
Photoluminescence studies of As/GaAsmodulated -barrier quantum wires have been performed with varying orientations. By using high optical excitation, emission from three quantum wire subbands is observed. For fields perpendicular to the wires we observe a distinct transformation of the quantization from quasi-one-dimensional quantum-wire states at low fields to fully quantized quasi-zero-dimensional states at higher fields. This change occurs as the Landau orbit sizes for the several subbands decrease compared to the lateral quantum-wire dimension. The experimental results are consistent with numerical calculations for these quantum wires in magnetic fields.
Keywords
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