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VOLUME 61 (1995) | ISSUE 1 | PAGE 38
Terahertz-range oscillations of the ballistic current of electrons with a negative effective mass
Ballistic diodes with a doped base of optimum length generate electrical oscillations in the range 2.5-4.0 Hz. The oscillation frequency is an internal parameter of the electron gas in the diode. It can be tuned continuously by varying the voltage across the diode. The generation itself and also the resonant properties of the structure are clearly governed by the particular dispersion relation for the electron energy, which contains a region with a negative effective mass. © 1995 American Institute of Physics.