TY - JOUR
KW - Spectroscopy
KW - Manganese oxide
KW - Magnetic fields
KW - Manganese
KW - Epitaxial growth
KW - Strontium titanates
KW - Strontium
KW - Dichroism
KW - X-ray magnetic circular dichroism
KW - Strontium titanate
KW - Applied magnetic fields
KW - Magnetic state
KW - LSMO films
KW - Magnetic configuration
KW - Scattering measurements
KW - Surface normal directions
KW - Magnetic thick films
AU - J.-S Lee
AU - D.A Arena
AU - P Yu
AU - C.S Nelson
AU - R Fan
AU - C.J Kinane
AU - S Langridge
AU - M.D Rossell
AU - Ramamoorthy Ramesh
AU - C.-C Kao
AB - We present an unreported magnetic configuration in epitaxial La 1-xSrxMnO3 (x∼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 the applied magnetic field. Spectroscopic and scattering measurements reveal that the average Mn valence varies from mixed Mn3⊃+/Mn4⊃+ to an enriched Mn3⊃+ region near the STO interface, resulting in a compressive lattice along the a, b axis and a possible electronic reconstruction in the Mn e g orbital (d3z2-r2). This reconstruction may provide a mechanism for coupling the Mn3⊃+ moments antiferromagnetically along the surface normal direction, and in turn may lead to the observed reversed magnetic configuration. © 2010 The American Physical Society.
BT - Physical Review Letters
DO - 10.1103/PhysRevLett.105.257204
LA - eng
M1 - 25
N1 - cited By 79
N2 - We present an unreported magnetic configuration in epitaxial La 1-xSrxMnO3 (x∼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 the applied magnetic field. Spectroscopic and scattering measurements reveal that the average Mn valence varies from mixed Mn3⊃+/Mn4⊃+ to an enriched Mn3⊃+ region near the STO interface, resulting in a compressive lattice along the a, b axis and a possible electronic reconstruction in the Mn e g orbital (d3z2-r2). This reconstruction may provide a mechanism for coupling the Mn3⊃+ moments antiferromagnetically along the surface normal direction, and in turn may lead to the observed reversed magnetic configuration. © 2010 The American Physical Society.
PY - 2010
T2 - Physical Review Letters
TI - Hidden magnetic configuration in epitaxial La1-xSr xMnO3 films
VL - 105
SN - 00319007
ER -