Nonvolatile programmable two-terminal diodes using a ferroelectric semiconductor

Motochika Okano, Yukio Watanabe

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


The conductance of diodes formed by epitaxial (Pb, La)(Zr, Ti)O3 on SrTiO3 doped with Nb is programed using the relaxation semiconductor characteristics of a ferroelectric. Namely, a three-terminal device function is given to a two-terminal device by time-domain control. The conductance modulation programed by a short-voltage pulse is perfectly retained for ten days at room temperature and is nondestructively read. The relaxation current at very low bias is also programmable. When the current is regulated by a metal/ferroelectric contact, the pulse modulation is obscure and is not retained. This implies that the surface layer at the metal/ferroelectric contact is negligibly thin or thinner than the tunneling distance.

Original languageEnglish
Pages (from-to)233-235
Number of pages3
JournalApplied Physics Letters
Issue number2
Publication statusPublished - Jan 10 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Nonvolatile programmable two-terminal diodes using a ferroelectric semiconductor'. Together they form a unique fingerprint.

Cite this