| Original Articles |
|
|
|
|
Effective-Medium Approach for Conductivities in Multi-Component Granular Mixtures |
| LI Ning, ZHANG Yong-You, JIN Guo-Jun |
| National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 |
|
| Cite this article: |
|
LI Ning, ZHANG Yong-You, JIN Guo-Jun 2008 Chin. Phys. Lett. 25 4395-4398 |
|
|
|
|
Abstract We apply the effective-medium theory to a multi-component mixture system, by which the effective longitudinal and Hall conductivities can be calculated. We find that there is more than one threshold in the multi-component mixture, and the maximum number of thresholds is one less than the component number. Further, the thresholds are mainly dependent on the relative volume ratio of the components when the conductivity ratios between any two components are far larger or smaller than one.
|
| Keywords:
74.25.Ha
73.40.Qv
72.80.Ng
|
|
|
Received: 02 September 2008
Published: 27 November 2008
|
|
| PACS: |
74.25.Ha
|
(Magnetic properties including vortex structures and related phenomena)
|
| |
73.40.Qv
|
(Metal-insulator-semiconductor structures (including semiconductor-to-insulator))
|
| |
72.80.Ng
|
(Disordered solids)
|
|
|
|
|
|
[1] Isichenko M B 1992 Rev. Mod. Phys. 64 961
[2]Heussinger C, Schaefer B and Frey E 2007 Phys. Rev. E 76 031906
[3]Bai B, Svirko Y, Turunen J and Vallius T 2007 Phys.Rev. A 76 023811
[4]Hilton D J,Prasankumar R P, Fourmaux S, Cavalleri A,Brassard D, El Khakani M A, Kieffer J C, Taylor A J and Averitt R D2007 Phys. Rev. Lett. 99 226401.
[5]Wang J G, Shao J D and Fan Z X 2005 Chin. Phys. Lett. 22 233
[6]Kim K H, Uehara M, Hess C, Sharma P A and Cheong S W 2000 Phys. Rev. Lett. 84 2961
[7]Bastea S 2007 Phys. Rev. E 75 031201
[8]Magier R and Bergman D J 2008 Phys. Rev. B 77144406
[9]Bergman D J and Stroud D G 2000 Phys. Rev. B 626603
[10]Wen F S, Qiao L, Yi H B, Zhou D and Li F S 2008 Chin. Phys. Lett. 25 751
[11]Wei E B and Gu G Q 2001 Chin. Phys. Lett. 18960
[12] Halley J W, Holcomb W K and Goetz K 1980 Phys. Rev.B 21 4840
[13]Johner N, Grimaldi C,Balberg I and Ryser P 2008 Phys.Rev. B 77 174204
[14]Cohen M H and Jortner J 1973 Phys. Rev. Lett. 30 696
[15]Landauer R 1952 J. Appl. Phys. 23 779 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
