Magnetically induced Bragg scattering of electrons in quantum-dot crystals

M. Elhassan, R. Akis, J. P. Bird, D. K. Ferry, T. Ida, K. Ishibashi

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Abstract

We demonstrate a novel manifestation of dynamic Bragg reflection in artificial quantum-dot crystals that is driven by the application of a magnetic field. This backscattering is coherently cascaded as the number of dots in the structure is increased, causing a superlinear damping of the electron wave function and the appearance of a series of gaps in the miniband spectrum. The evolution of the dynamic miniband structure as the magnetic field is varied gives rise to behavior analogous to a metal-insulator transition, which is manifest as a dramatic resonance in the magneto-resistance of the structures.

Original languageEnglish (US)
Article number205341
Pages (from-to)205341-1-205341-4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number20
DOIs
StatePublished - Nov 1 2004

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Elhassan, M., Akis, R., Bird, J. P., Ferry, D. K., Ida, T., & Ishibashi, K. (2004). Magnetically induced Bragg scattering of electrons in quantum-dot crystals. Physical Review B - Condensed Matter and Materials Physics, 70(20), 205341-1-205341-4. [205341]. https://doi.org/10.1103/PhysRevB.70.205341