2008/04/23 by Peter Horsch, Andrzej M. Oleś, Andrzej M. Oles' +3 · 80 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Chemistry #Condensed matter physics #Crystallography #Diffraction #Ferromagnetism #Lattice (music) #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #Octahedron #Orthorhombic crystal system #Phase (matter) #Phase diagram #Physics #Quantum mechanics #Superexchange #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.100.167205
published in Physical Review Letters 100(16), 167205 (American Physical Society) · 4 pages, 5 figures
openalex publication_date 2008/04/23 · arxiv created 2008/05/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We introduce a microscopic model which unravels the physical mechanisms responsible for the observed phase diagram of the RVO3 perovskites. It reveals a nontrivial interplay between superexchange, the orbital-lattice coupling due to the GdFeO3-like rotations of the VO6 octahedra, and orthorhombic lattice distortions. We find that the lattice strain affects the onset of the magnetic and orbital order by partial suppression of orbital fluctuations. The present approach also provides a natural explanation of the observed reduction of magnon energies from LaVO3 to YVO3.