Pandey, N. K. ; Lobo, R. P. S. M. ; Budhani, R. C. (2003) Electric-field-tuned metallic fraction and dynamic percolation in a charge-ordered manganite Physical Review B, 67 (5). 054413_1-054413_4. ISSN 0163-1829
|
PDF
- Publisher Version
63kB |
Official URL: http://prb.aps.org/abstract/PRB/v67/i5/e054413
Related URL: http://dx.doi.org/10.1103/PhysRevB.67.054413
Abstract
A percolative insulator-metal transition triggered by strong electric field is observed in epitaxial thin films of (Pr0.65La0.35)0.7Ca0.3MnO3. The field-driven metallic state is achieved in a regime of temperatures where the material is weakly ferromagnetic. Our experiments suggest that the metallic fraction reaches percolation threshold pc at a field-dependent temperature Tpc. A strong frequency dependence of complex ac resistance in the vicinity of Tpc is consistent with the picture of percolative transport in a phase-separated medium.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 5600 |
Deposited On: | 19 Oct 2010 11:47 |
Last Modified: | 16 May 2016 16:04 |
Repository Staff Only: item control page