Samal, D and Kundu, R and Dalai, MK and Sekhar, BR and Kumar, Anil PS (2012) Time evolution of resistance in response to magnetic field: Evidence of glassy transport in La0.85Sr0.15CoO3. In: PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 249 (11). pp. 2190-2193.
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Abstract
We demonstrate the distinct glassy transport phenomena associated with the phase separated and spin-glass-like phases of La0.85Sr0.15CoO3, prepared under different heat-treatment conditions. The low-temperature annealed (phase-separated) sample, exhibits a small change in resistance, with evolution of time, as compared to the high-temperature annealed (spin glass) one. However, the resistance change as a function of time, in both cases, is well described by a stretched exponential fit, signifying the slow dynamics. Moreover, the ultraviolet spectroscopy study evidences a relatively higher density of states in the vicinity of EF for low-temperature annealed sample and this correctly points to its less semiconducting behavior.
| Item Type: | Journal Article |
|---|---|
| Publication: | PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS |
| Publisher: | WILEY-V C H VERLAG GMBH |
| Additional Information: | Copyright for this article belongs to WILEY-V C H VERLAG GMBH, GERMANY |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 31 Dec 2012 05:46 |
| Last Modified: | 31 Dec 2012 05:46 |
| URI: | http://eprints.iisc.ac.in/id/eprint/45477 |
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