Evolution of magneto-orbital order upon B-site electron doping in Na1−xCaxMn7O12 quadruple perovskite manganites
| Autor: | Johnson, RD, Mezzadri, F, Manuel, P, Khalyavin, DD, Gilioli, E, Radaelli, PGR |
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| Rok vydání: | 2018 |
| Předmět: |
Condensed Matter - Strongly Correlated Electrons
Condensed Matter::Materials Science Strongly Correlated Electrons (cond-mat.str-el) Condensed Matter::Superconductivity FOS: Physical sciences Metastable manganites Ordering phenomena Neutron diffraction Condensed Matter::Strongly Correlated Electrons |
| Zdroj: | Physical review letters 120 (2018): 257202-1. doi:10.1103/PhysRevLett.120.257202 info:cnr-pdr/source/autori:Johnson, R. D.; Mezzadri, F.; Manuel, P.; Khalyavin, D. D.; Gilioli, E.; Radaelli, P. G./titolo:Evolution of Magneto-Orbital order Upon B-Site Electron Doping in Na1-xCaxMn7O12 Quadruple Perovskite Manganites/doi:10.1103%2FPhysRevLett.120.257202/rivista:Physical review letters (Print)/anno:2018/pagina_da:257202-1/pagina_a:/intervallo_pagine:257202-1/volume:120 |
| Popis: | We present the discovery and refinement by neutron powder diffraction of a new magnetic phase in the Na1-xCaxMn7O12 quadruple perovskite phase diagram, which is the incommensurate analogue of the well-known pseudo-CE phase of the simple perovskite manganites. We demonstrate that incommensurate magnetic order arises in quadruple perovskites due to the exchange interactions between A and B sites. Furthermore, by constructing a simple mean field Heisenberg exchange model that generically describes both simple and quadruple perovskite systems, we show that this new magnetic phase unifies a picture of the interplay between charge, magnetic and orbital ordering across a wide range of compounds. Comment: Accepted for publication in Physical Review Letters |
| Databáze: | OpenAIRE |
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