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

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. © 2004 American Institute of Physics. [DOI: 10.1063/1.1835996]


Publié dans:
Applied Physics Letters, 85, 23, 5619-5621
Année
2004
Mots-clefs:
Note:
Variation de l’exposant de percolation par déformation mécanique.
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 Notice créée le 2006-06-27, modifiée le 2018-12-03

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