Hidden magnetic configuration in epitaxial La1-rSrzMnO3 films

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We present an unreported magnetic configuration in epitaxial La{sub 1-x}Sr{sub x}MnO{sub 3} (x {approx} 0.3) (LSMO) films grown on strontium titanate (STO). X-ray magnetic circular dichroism indicates that the remanent magnetic state of thick LSMO films is opposite to the direction of applied magnetic field. Spectroscopic and scattering measurements reveal that the average Mn valence varies from mixed Mn{sup 3+}/Mn{sup 4+} to an enriched Mn{sup 3+} region near the STO interface, resulting in a compressive lattice along a, b-axis and a possible electronic reconstruction in the Mn e{sub g} orbital (d{sub 3z{sup 2}-r{sup 2}}). This reconstruction may provide a mechanism ... continued below

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Kao, Chi-Chang May 23, 2011.

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We present an unreported magnetic configuration in epitaxial La{sub 1-x}Sr{sub x}MnO{sub 3} (x {approx} 0.3) (LSMO) films grown on strontium titanate (STO). X-ray magnetic circular dichroism indicates that the remanent magnetic state of thick LSMO films is opposite to the direction of applied magnetic field. Spectroscopic and scattering measurements reveal that the average Mn valence varies from mixed Mn{sup 3+}/Mn{sup 4+} to an enriched Mn{sup 3+} region near the STO interface, resulting in a compressive lattice along a, b-axis and a possible electronic reconstruction in the Mn e{sub g} orbital (d{sub 3z{sup 2}-r{sup 2}}). This reconstruction may provide a mechanism for coupling the Mn{sup 3+} moments antiferromagnetically along the surface normal direction, and in turn may lead to the observed reversed magnetic configuration.

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  • Journal Name: Submitted to Physics Letters

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  • Report No.: SLAC-PUB-14341
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1015014
  • Archival Resource Key: ark:/67531/metadc837258

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  • May 23, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Nov. 28, 2016, 9:27 p.m.

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Kao, Chi-Chang. Hidden magnetic configuration in epitaxial La1-rSrzMnO3 films, article, May 23, 2011; United States. (digital.library.unt.edu/ark:/67531/metadc837258/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.