Mott versus Slater-type metal-insulator transition in Mn-substituted SrSr 3Ru 2O 7

We present a temperature-dependent x-ray-absorption (XAS) and resonant elastic x-ray scattering (REXS) study of the metal-insulator transition (MIT) in Sr3(Ru1−xMnx)2O7. The XAS results reveal that the MIT drives the onset of local antiferromagnetic correlations around the Mn impurities, a precursor...

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Main Authors: Hossain, Suman (Author) , Haverkort, Maurits W. (Author) , Hu, Zhimin (Author)
Format: Article (Journal)
Language:English
Published: 9 July 2012
In: Physical review. B, Condensed matter and materials physics
Year: 2012, Volume: 86, Issue: 4, Pages: 041102
ISSN:1550-235X
DOI:10.1103/PhysRevB.86.041102
Online Access:Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevB.86.041102
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.86.041102
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Author Notes:M.A. Hossain, B. Bohnenbuck, Y.D. Chuang, M.W. Haverkort, I.S. Elfimov, A. Tanaka, A.G. Cruz Gonzalez, Z. Hu, H.-J. Lin, C.T. Chen, R. Mathieu, Y. Tokura, Y. Yoshida, L.H. Tjeng, Z. Hussain, B. Keimer, G.A. Sawatzky, and A. Damascelli
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Summary:We present a temperature-dependent x-ray-absorption (XAS) and resonant elastic x-ray scattering (REXS) study of the metal-insulator transition (MIT) in Sr3(Ru1−xMnx)2O7. The XAS results reveal that the MIT drives the onset of local antiferromagnetic correlations around the Mn impurities, a precursor of the long-range antiferromagnetism detected by REXS at Torder<TMIT. This establishes that the MIT is of the Mott type (electronic correlations) as opposed to Slater type (magnetic order). While this behavior is induced by Mn impurities, the (14,14,0) order exists for a wide range of Mn concentrations, and points to an inherent instability of Sr3Ru2O7.
Item Description:Die Ziffern 3, 2 und 7 im Text sind tiefgestellt
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Physical Description:Online Resource
ISSN:1550-235X
DOI:10.1103/PhysRevB.86.041102