High magnetic field quantum transport in Au nanoparticle-cellulose films

L. Turyanska*, O. Makarovsky, A. Patane, N. V. Kozlova, Zhiming Liu, M Li, S. Mann

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

6 Citations (Scopus)

Abstract

We report the magneto-transport properties of cellulose films comprising interconnected networks of gold nanoparticles (Au NPs). Cellulose is a biopolymer that can be made electrically conducting by cellulose regeneration in Au NP dispersions. The mechanism of electronic conduction in the Au-cellulose films changes from variable range hopping to metallic-like conduction with decreasing resistivity. Our experiments in high magnetic fields (up to 45 T) reveal negative magnetoresistance in the highly resistive films. This is attributed to the spin polarization of the Au NPs and the magnetic field induced suppression of electron spin flips during spin-polarized tunneling in the NP network.

Original languageEnglish
Article number045702
Number of pages5
JournalNanotechnology
Volume23
Issue number4
DOIs
Publication statusPublished - 3 Feb 2012

Keywords

  • GOLD
  • BIOPOLYMER

Cite this

Turyanska, L., Makarovsky, O., Patane, A., Kozlova, N. V., Liu, Z., Li, M., & Mann, S. (2012). High magnetic field quantum transport in Au nanoparticle-cellulose films. Nanotechnology, 23(4), [045702]. https://doi.org/10.1088/0957-4484/23/4/045702