Metal to insulator transition in films of molecularly linked gold nanoparticles.

  title={Metal to insulator transition in films of molecularly linked gold nanoparticles.},
  author={Amir Zabet-Khosousi and Paul-Emile Trudeau and Yoshinori Suganuma and Al-Amin Dhirani and Bryan Statt},
  journal={Physical review letters},
  volume={96 15},
We report a metal to insulator transition (MIT) in disordered films of molecularly linked gold nanoparticles (NPs). As the number of carbons (n) of alkanedithiol linker molecules (C(n)S2) is varied, resistance (R) at low temperature (T = 2 K) and at 200 K, as well as trends in R vs T data at intermediate temperatures, all point to an MIT occurring at n = 5. We describe these results in a context of a Mott-Hubbard MIT. We find that all insulating samples (n > or = 5) exhibit a universal scaling… CONTINUE READING
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