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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14365
Title: Signature of an antiferromagnetic metallic ground state in heavily electron-doped Sr 2FeMoO 6
Authors: Jana S.
Meneghini C.
Sanyal P.
Sarkar S.
Saha-Dasgupta T.
Karis O.
Ray S.
Published in: Physical Review B - Condensed Matter and Materials Physics
Abstract: Sr 2FeMoO 6 is a well-known double perovskite with exciting high-temperature magnetic properties. Through various magnetic and spectroscopic measurements, we collect compelling evidence here that this compound can be driven into a rare three-dimensional antiferromagnetic metallic state by heavy electron doping (70% Sr2 + substitution by La3 +). Moreover, local structural study of these Sr 2-xLa xFeMoO 6 (1.0 ≤x≤ 1.5) compounds reveals unusual atomic scale phase distribution in terms of La,Fe- and Sr,Mo-rich regions driven by strong La-O covalency, a phenomenon hitherto undisclosed in double perovskites. The general trend of our findings is in agreement with theoretical calculations carried out on realistic structures having local chemical fluctuations, which reconfirms the relevance of the kinetic-energy-driven magnetic model. © 2012 American Physical Society.
Citation: Physical Review B - Condensed Matter and Materials Physics (2012), 86(5): -
URI: https://doi.org/10.1103/PhysRevB.86.054433
http://repository.iitr.ac.in/handle/123456789/14365
Issue Date: 2012
ISSN: 10980121
Author Scopus IDs: 7102102180
7103356368
16205378700
55205866100
6701869945
6603666605
7402324239
Author Affiliations: Jana, S., Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
Meneghini, C., Dipartimento di Fisica, Universitá di Roma Tre, Via della vasca navale, 84 I-00146 Roma, Italy, OGG-GILDA C/o ESRF, Grenoble, France
Sanyal, P., Department of Condensed Matter and Materials Science, S.N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700 098, India
Sarkar, S., Department of Condensed Matter and Materials Science, S.N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700 098, India
Saha-Dasgupta, T., Department of Condensed Matter and Materials Science, S.N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700 098, India
Karis, O., Department of Physics and Astronomy, Uppsala University, SE-75121 Uppsala, Sweden
Ray, S., Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India, Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
Corresponding Author: Jana, S.; Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
Appears in Collections:Journal Publications [PH]

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