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

doi:10.1088/0957-4484/23/4/045702

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 journal › Article (Academic Journal) › peer-review

10 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 language	English
Article number	045702
Number of pages	5
Journal	Nanotechnology
Volume	23
Issue number	4
DOIs	https://doi.org/10.1088/0957-4484/23/4/045702
Publication status	Published - 3 Feb 2012

Keywords

GOLD
BIOPOLYMER

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@article{72617051b2c64bcfa4764e1f985fc14e,

title = "High magnetic field quantum transport in Au nanoparticle-cellulose films",

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.",

keywords = "GOLD, BIOPOLYMER",

author = "L. Turyanska and O. Makarovsky and A. Patane and Kozlova, {N. V.} and Zhiming Liu and M Li and S. Mann",

year = "2012",

month = feb,

day = "3",

doi = "10.1088/0957-4484/23/4/045702",

language = "English",

volume = "23",

journal = "Nanotechnology",

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TY - JOUR

T1 - High magnetic field quantum transport in Au nanoparticle-cellulose films

AU - Turyanska, L.

AU - Makarovsky, O.

AU - Patane, A.

AU - Kozlova, N. V.

AU - Liu, Zhiming

AU - Li, M

AU - Mann, S.

PY - 2012/2/3

Y1 - 2012/2/3

N2 - 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.

AB - 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.

KW - GOLD

KW - BIOPOLYMER

U2 - 10.1088/0957-4484/23/4/045702

DO - 10.1088/0957-4484/23/4/045702

M3 - Article (Academic Journal)

C2 - 22214648

SN - 0957-4484

VL - 23

JO - Nanotechnology

JF - Nanotechnology

IS - 4

M1 - 045702

ER -

High magnetic field quantum transport in Au nanoparticle-cellulose films

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