2004/09/12 by Zhong Fang, Naoto Nagaosa
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Electronic and Structural Properties of Oxides #Jahn–Teller effect #Magnetic and transport properties of perovskites and related materials #Physics #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.93.176404
published as Phys. Rev. Lett. 93, 176404 (2004) · 4 pages, 2 tables, 2 figures, (accepted by PRL)
arxiv created 2004/09/12 · openalex publication_date 2004/10/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We argue that the large Jahn-Teller (JT) distortions in YVO3 and LaVO3 should suppress the quantum orbital fluctuation. The unusual magnetic properties can be well explained based on local density approximation + Hubbard U calculations using experimental structures, in terms of the JT orbital. The observed splitting of the spin-wave dispersions for YVO3 in a C-type antiferromagnetic state is attributed to the inequivalent VO2 layers in the crystal structure, instead of the ``orbital-Peierls state.'' Alternative stacking of ab-plane exchange couplings produces the c-axis spin-wave splitting; thus, the spin system is highly three dimensional rather than quasi-one-dimensional. Similar splitting is also predicted for LaVO3, although it is weak.