Published February 20, 2004
| Published
Journal Article
Open
Percolating through networks of random thresholds: Finite temperature electron tunneling in metal nanocrystal arrays
Abstract
We investigate how temperature affects transport through large networks of nonlinear conductances with distributed thresholds. In monolayers of weakly coupled gold nanocrystals, quenched charge disorder produces a range of local thresholds for the onset of electron tunneling. Our measurements delineate two regimes separated by a crossover temperature T^∗. Up to T^∗ the nonlinear zero-temperature shape of the current-voltage curves survives, but with a threshold voltage for conduction that decreases linearly with temperature. Above T^∗ the threshold vanishes and the low-bias conductance increases rapidly with temperature. We develop a model that accounts for these findings and predicts T^∗.
Additional Information
© 2004 The American Physical Society. (Received 17 February 2003; published 18 February 2004). We thank Qiti Guo and Benjamin Lauderdale for experimental assistance and Eduard Antonyan, Terry Bigioni, Ilya Gruzberg, Alan Middleton, Toan Nguyen, and Tom Witten for stimulating discussions. X.-M. L. acknowledges support from DOE W-31-109-ENG-38. This work was supported by the UC-ANL Consortium for Nanoscience Research and by the NSF MRSEC program under DMR-0213745.Attached Files
Published - PhysRevLett.92.076801.pdf
Files
PhysRevLett.92.076801.pdf
Files
(296.1 kB)
Name | Size | Download all |
---|---|---|
md5:3f38dd75a052610c8341c479966e0f52
|
296.1 kB | Preview Download |
Additional details
- Eprint ID
- 46955
- Resolver ID
- CaltechAUTHORS:20140707-163028858
- Department of Energy (DOE)
- W-31-109-ENG-38
- Consortium for Nanoscience Research
- NSF
- DMR-0213745
- Created
-
2014-07-14Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field