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Strain-induced changes of the electronic properties of B-site ordered double-perovskite Sr2CoIrO6 thin films

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Chang,  C. F.
Chun-Fu Chang, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Kuo,  C.-Y.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Ha,  T. D.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Tjeng,  L. H.
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Esser, S., Chang, C. F., Kuo, C.-Y., Merten, S., Roddatis, V., Ha, T. D., et al. (2018). Strain-induced changes of the electronic properties of B-site ordered double-perovskite Sr2CoIrO6 thin films. Physical Review B, 97(20): 205121, pp. 1-11. doi:10.1103/PhysRevB.97.205121.


Cite as: http://hdl.handle.net/21.11116/0000-0001-6F25-A
Abstract
B-site ordered thin films of double perovskite Sr2CoIrO6 were epitaxially grown by a metalorganic aerosol deposition technique on various substrates, actuating different strain states. X-ray diffraction, transmission electron microscopy, and polarized far-field Raman spectroscopy confirm the strained epitaxial growth on all used substrates. Polarization-dependent Co L-2,L-3 x-ray absorption spectroscopy reveals a change of the magnetic easy axis of the antiferromagnetically ordered (high-spin) Co3+ sublattice within the strain series. By reversing the applied strain direction from tensile to compressive, the easy axis changes abruptly from in-plane to out-of-plane orientation. The low-temperature magnetoresistance changes its sign respectively and is described by a combination of weak antilocalization and anisotropic magnetoresistance effects.