Research

Microwave power generation by magnetic superlattices


Reference:

Littlejohn, S., Nogaret, A., Davies, S. R., Henini, M., Beere, H. E. and Ritchie, D. A., 2011. Microwave power generation by magnetic superlattices. Applied Physics Letters, 99 (24), 242107.

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    Official URL:

    http://dx.doi.org/10.1063/1.3670400

    Abstract

    We report on microwave power emission by ballistic electrons as they cross a region of spatially inhomogeneous magnetic field. Magnetic finger gates were fabricated at the surface of high mobility GaAs/AlGaAs Hall bars embedded in a coplanar waveguide. By modulating the current injected through the Hall bar and measuring the second harmonic of the signal rectified by a Schottky detector, we obtain the microwave power emitted by the superlattice. This power (~6W.m-2) is compared to the fluorescence of electron spins that undergo spin resonance as they cross domains of opposite magnetic field.

    Details

    Item Type Articles
    CreatorsLittlejohn, S., Nogaret, A., Davies, S. R., Henini, M., Beere, H. E. and Ritchie, D. A.
    DOI10.1063/1.3670400
    DepartmentsFaculty of Science > Physics
    Publisher StatementNogaret_APL_2011_99_242107.pdf: Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Littlejohn, S., Nogaret, A., Davies, S. R., Henini, M., Beere, H. E. and Ritchie, D. A., 2011. Microwave power generation by magnetic superlattices. Applied Physics Letters, 99 (24), 242107 and may be found at http://apl.aip.org/
    RefereedYes
    StatusPublished
    ID Code27737

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