Magnetic Superstructure and Metal-Insulator Transition in Mn-Substituted Sr3Ru2O7

We present a temperature-dependent resonant elastic soft x-ray scattering (REXS) study of the metal-insulator transition in Sr3(Ru1-xMnx)2O7, performed at both Ru and Mn L-edges. Resonant magnetic superstructure reflections, which indicate an incipient instability of the parent compound, are detecte...

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Bibliographic Details
Published in:arXiv.org 2009-05
Main Authors: Hossain, M A, Bohnenbuck, B, Y -D Chuang, Cruz Gonzalez, A G, Zegkinoglou, I, Haverkort, M W, Geck, J, Hawthorn, D G, H -H Wu, Schussler-Langeheine, C, Mathieu, R, Tokura, Y, Satow, S, Takagi, H, Yoshida, Y, Denlinger, J D, Elfimov, I S, Hussain, Z, Keimer, B, Sawatzky, G A, Damascelli, A
Format: Article
Language:English
Subjects:
Elastic scattering
Insulators
Manganese
Materials substitution
Metal-insulator transition
Percolation
Soft x rays
Stability
Superstructures
Temperature dependence
X-ray scattering
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Summary:We present a temperature-dependent resonant elastic soft x-ray scattering (REXS) study of the metal-insulator transition in Sr3(Ru1-xMnx)2O7, performed at both Ru and Mn L-edges. Resonant magnetic superstructure reflections, which indicate an incipient instability of the parent compound, are detected below the transition. Based on modelling of the REXS intensity from randomly distributed Mn impurities, we establish the inhomogeneous nature of the metal-insulator transition, with an effective percolation threshold corresponding to an anomalously low x
ISSN:2331-8422