Wu, T. ; Ogale, S. B. ; Garrison, J. E. ; Nagaraj, B. ; Biswas, Amlan ; Chen, Z. ; Greene, R. L. ; Ramesh, R. ; Venkatesan, T. ; Millis, A. J. (2001) Electroresistance and electronic phase separation in mixed-valent manganites Physical Review Letters, 86 (26). pp. 5998-6001. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v86/i26/p5998_1
Related URL: http://dx.doi.org/10.1103/PhysRevLett.86.5998
Abstract
The sensitivity of transport in colossal magnetoresistance (CMR) manganites to external electric and magnetic fields is examined using field effect configurations with La0.7Ca0.3MnO3 (LCMO), Na0.7Sr0.3MnO3, La0.7Ba0.3MnO3, and La0.5Ca0.5MnO3 (0.5-doped LCMO) channels, and ferroelectric PbZr0.2Ti0.8O3 (PZT) or dielectric (SrTiO3) gates. A large electroresistance (ER) of ~76% at 4×105V/cm is found in LCMO with PZT-ferroelectric gate, but the magnitude of the effect is much smaller (a few percent) in the other three channels. The ER and CMR effects are remarkably complimentary. The size and systematics of the effect strongly favor a percolative phase separation picture.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 26859 |
| Deposited On: | 08 Dec 2010 13:04 |
| Last Modified: | 17 May 2016 10:09 |
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