TITLE

Strain modulation of transport criticality in RuO2-based thick-film resistors

AUTHOR(S)
Vionnet-Menot, Sonia; Grimaldi, Claudio; Ryser, Peter; Maeder, Thomas; Strässler, Sigfrid
PUB. DATE
December 2004
SOURCE
Applied Physics Letters;12/6/2004, Vol. 85 Issue 23, p5619
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We show that in RuO2–glass composites the nonuniversal resistivity exponent can be modulated by an applied mechanical strain, signaled by a logarithmic divergence of the piezoresistive response at the percolation threshold. We interpret this phenomenon as being due to a tunneling-distance dependence of the transport exponent, supporting therefore a theory of transport nonuniversality proposed some years ago.
ACCESSION #
15305397

 

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