Gupta, Kapil ; Mahadevan, Priya (2009) Strain-driven magnetism in LaCoO3 thin films Physical Review B: Condensed Matter and Materials Physics, 79 (2). Article ID 020406(R). ISSN 2469-9950
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Official URL: http://journals.aps.org/prb/abstract/10.1103/PhysR...
Related URL: http://dx.doi.org/10.1103/PhysRevB.79.020406
Abstract
The electronic structure of epitaxial films on LaCoO3 (LCO) has been studied within first-principles electronic structure calculations. A spin state transition is found to take place as a function of lattice strain which freezes in the intermediate spin state for nonzero strain. In contrast to earlier speculations this is found to arise from substrate strain alone and angle variations are small. The intermediate spin state also stabilizes ferromagnetism in the ground state. The anomalous temperature dependence of the x-ray absorption spectra for films of LCO on LCO and its absence in films of LCO on (LaAlO3)0.3 (SrAlTaO6)0.7 is also explained.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 102959 |
| Deposited On: | 02 Feb 2018 03:56 |
| Last Modified: | 02 Feb 2018 03:56 |
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