Repetition of negative differential resistance in vertically integrated double-barrier resonant tunneling structures

J. S. Wu, C. P. Lee, C. Y. Chang, K. H. Chang, D. G. Liu, D. C. Liou

Research output: Contribution to journalArticle

4 Citations (Scopus)


We propose and demonstrate a novel operation in the vertical integration of double-barrier resonant tunneling structures (DBRTS's) in which the negative differential resistance (NDR) region can be repeated. When two DBRTS's are combined in series, one of which has a higher peak current, a lower valley current, and a larger operation range of voltage in the NDR region than those of the other, the current-voltage (I-V) characteristic shows three current peaks instead of the conventional two. This phenomenon is based on the fundamental requirement of current continuity in serially combined devices. This operation provides a method to obtain a large number of current peaks by using less DBRTS's.

Original languageEnglish
Pages (from-to)4382-4385
Number of pages4
JournalJournal of Applied Physics
Issue number9
Publication statusPublished - 1990 Dec 1


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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