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Momentum filter using resonant Zener tunneling.

Research output: Contribution to journalJournal articlepeer-review

Article number045316
<mark>Journal publication date</mark>16/07/2007
<mark>Journal</mark>Physical review B
Issue number4
Publication StatusPublished
<mark>Original language</mark>English


We consider the formation of a double barrier structure which includes both the valence and conduction bands in an InSb/InAlSb quantum well system and demonstrate basic features of the transport process through this structure, which exhibits Zener tunneling. In particular, we employ an eight-band model and the Landauer-Büttiker formalism [Phys. Rev. B 31, 6207 (1985)] to investigate the transport process which under high confinement involves resonant energy levels due to the induced quasibound states in the valence bands. The mechanism of momentum filtering, taking advantage of resonant Zener tunneling, is shown to give improved performance at elevated temperatures compared with a unipolar double barrier resonant tunneling structure.