Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1998-08-28
Physica B, 254 (1998) 260
Physics
Condensed Matter
Disordered Systems and Neural Networks
9 pages, LATEX, 6 figures. To be published in Physica B. Fig.4 is JPG file, in case of troubles with it, appeal for help and a
Scientific paper
10.1016/S0921-4526(98)00445-1
The low temperature (0.5-55 K) conduction of semicontinuous gold film vacuum deposited at T \approx 50 K is studied. The film is near the percolation threshold (thickness 3.25 nm). Its resistance is extremely sensitive to the applied voltage U. At low enough U the film behaves as an insulator (two-dimensional granular metal). In this state the dependences R(T) \propto \exp (1/T) (for T \leq 20 K) and R(U) \propto \exp (1/U)) (for T \leq 1 K and U > 0.1 V) are observed. Magnetoresistance (MR) is negative and can be described by \Delta R(H)/R(0) \propto -H^2/T. This negative MR which manifests itself for nearest-neighbour hopping is rather uncommon and, up to now, has not been clarified. The possible mechanisms of such case of negative MR are discussed.
Belevtsev B. I.
Beliayev Yu. E.
Komnik Yu. F.
Kopeichenko Yu. E.
No associations
LandOfFree
Negative magnetoresistance in the nearest-neighbour hopping conduction in granular gold film does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Negative magnetoresistance in the nearest-neighbour hopping conduction in granular gold film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Negative magnetoresistance in the nearest-neighbour hopping conduction in granular gold film will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-349090