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.
Original language | English |
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Article number | 242107 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 24 |
DOIs | |
Publication status | Published - 12 Dec 2011 |