Mott versus Slater-type metal-insulator transition in Mn-substituted Sr3Ru2O7

• Verfasst von: Hossain, Suman [VerfasserIn]
• Verfasst von: Haverkort, Maurits W. [VerfasserIn]
• Verfasst von: Hu, Zhimin [VerfasserIn]
• Titel: Mott versus Slater-type metal-insulator transition in Mn-substituted Sr3Ru2O7
• Verf.angabe: M.A. Hossain, B. Bohnenbuck, Y.D. Chuang, M.W. Haverkort, I.S. Elfimov, A. Tanaka, A.G. Cruz, 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
• Fussnoten: Die Ziffern 3, 2 und 7 im Text sind tiefgestellt ; Gesehen am 27.11.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2012
• Band/Heft Quelle: (2012) Artikel-Nummer 1206.4689, 4 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565719573

Abstract

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 T_order<T_MIT. 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 (1/4,1/4,0) order exists for a wide range of Mn concentrations, and points to an inherent instability of the parent compound.