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Cited by 408

The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.

ac conduction and 1/f noise in a Cr-film lattice-percolation system

Song, Yi, Lee, Sung-Ik, Gaines, James R.·1992·Physical Review B
DOI 10.1103/physrevb.46.14
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Abstract

The ac conductivity \ensuremath{\sigma}(\ensuremath{\omega}), ac dielectric constant \ensuremath{\epsilon}(\ensuremath{\omega}), and (1/f)-noise spectral density ${\mathit{S}}_{\mathit{v}}$(f) have been studied in a Cr-film lattice-percolation system generated by electron-beam lithography. A power-law behavior, \ensuremath{\sigma}(\ensuremath{\omega})\ensuremath{\propto}${\mathrm{\ensuremath{\omega}}}^{\mathit{x}}$ and \ensuremath{\epsilon}(\ensuremath{\omega})\ensuremath{\propto}${\mathrm{\ensuremath{\omega}}}^{\mathrm{\ensuremath{-}}\mathit{y}}$, is observed near the percolation threshold. The ac-conductivity and ac-dielectric-constant exponents x and y are found to be 0.98\ifmmode\pm\else\textpm\fi{}0.09 and 0.08\ifmmode\pm\else\textpm\fi{}0.04, respectively. While these results satisfy the general scaling law x+y=1 and are consistent with those previously obtained on Au-film continuum-percolation systems, they cannot be explained by present percolation theories applied to two-dimensional (2D) systems. The normalized (1/f)-noise spectral density ${\mathit{S}}_{\mathit{v}}$(f)/${\mathit{V}}^{2}$ is found to scale as ${\mathit{R}}^{\mathit{w}}$ (where R is the sample resistance) with critical exponent w=1.18\ifmmode\pm\else\textpm\fi{}0.19. Once again, the numerical value of w is appreciably different from the predictions of present percolation theories applied to 2D systems. We discuss the discrepancy between the experimental results and percolation theories.

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Metadata

Authors
Song, Y., Lee, S.-I., & Gaines, J. R.
Venue
Physical Review B
Publisher
American Physical Society (APS)
Published
1992-07-01
Volume
46
Issue
1
Pages
14-20
ISSN
  • 0163-1829 (ISSN-L)
  • 1095-3795
DOI
10.1103/physrevb.46.14
OpenAlex
W2004878313
Cited by
408
References
17
FWCI
13.78
Type
journal article
Language
en
Open access
closed

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