TITLE

Nanometer-scale switches using copper sulfide

AUTHOR(S)
Sakamoto, T.; Sunamura, H.; Kawaura, H.; Hasegawa, T.; Nakayama, T.; Aono, M.
PUB. DATE
May 2003
SOURCE
Applied Physics Letters;5/5/2003, Vol. 82 Issue 18, p3032
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We describe a nanometer-scale switch that uses a copper sulfide film and demonstrate its performance. The switch consists of a copper sulfide film, which is a chalcogenide semiconductor, sandwiched between copper and metal electrodes. Applying a positive or negative voltage to the metal electrode can repeatedly switch its conductance in under 100 µs. Each state can persist without a power supply for months, demonstrating the feasibility of nonvolatile memory with its nanometer scale. While biasing voltages, copper ions can migrate in copper sulfide film and can play an important role in switching.
ACCESSION #
9630228

 

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