Esaki-Tsu superlattice oscillator: Josephson-like dynamics of carriers
Anatoly A. Ignatov, K. F. Renk, E. P. Dodin
DOI 10.1103/PhysRevLett.70.1996 · Physical Review Letters
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Abstract
We report on a theoretical treatment of the Esaki-Tsu superlattice oscillator emphasizing a profound link between the dynamics of charge carriers in a superlattice and the dynamics of Josephson junctions. Using a balance-equation aproach we calculate the oscillator efficiency taking account fo the negative effective mass that carriers can have in a miniband and of dissipation. We show that emission of electromagnetic radiation from currently available superlattices can occur due to multiphoton transitions from almost zero up to terahertz frequencies.
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