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Spin State Transition in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>LaCoO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>Studied Using Soft X-ray Absorption Spectroscopy and Magnetic Circular Dichroism
Using soft x-ray absorption spectroscopy and magnetic circular dichroism at the Co-${L}_{2,3}$ edge, we reveal that the spin state transition in ${\mathrm{LaCoO}}_{3}$ can be well described by a low-spin ground state and a triply degenerate high-spin first excited state. From the temperature dependence of the spectral line shapes, we find …