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Noncollinear magnetism in post‐perovskites from first principles: Comparison between CaRhO 3 and NaNiF 3 (Phys. Status Solidi B 4/2015)
Author(s) -
GarciaCastro A. C.,
Romero A. H.,
Bousquet E.
Publication year - 2015
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201570321
Subject(s) - magnetism , antiferromagnetism , condensed matter physics , perovskite (structure) , octahedron , materials science , physics , crystallography , crystal structure , chemistry
The post‐perovskite (pPv) phase appears as the pressure response in perovskite ABX 3 materials. This phase was discovered in the Earth mantle for the MgSiO 3 compound. Since then, it has been found in several materials with remarkable and exciting novel properties that go from Mott insulator states to 1D and 2D magnetism, mainly due to its layered‐like crystalline structure. The magnetic response in these materials has attracted large interest due to recent experiments where “antiferromagnetic + weakferromagnetic” behavior has been measured in some pPv fl uorides and oxides. In this issue, Garcia‐Castro et al. (pp. 689–694 ) present a theoretical work where the authors unveil the source of the noncollinear magnetism using group theory analysis and fi rst‐principles calculations. The cover fi gure shows the layered post‐perovskite structure (taking the CaRhO 3 as example) as well as the non‐collinear magnetic orderings allowed by symmetry in these structures, where a magnetically active B‐site cation sits at the center of the BX 6 octahedra. This contribution is part of the Special Section “High Pressure in Semiconductor Physics”, guest‐edited by Andrés Cantarero and Isaac Hernández‐Calderón (see the Preface on pp. 651–652 ).