Frustrated spin-1∕2square lattice in the layered perovskitePbVO3

2008/01/09 by Alexander A. Tsirlin, Alexei А. Belik, Alexei A. Belik +7 · 3 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.77.092402

published as Phys. Rev. B, 77, 092402 (2008) · 4 pages, 4 figures, 2 tables

arxiv created 2008/01/09 · openalex publication_date 2008/03/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report on the magnetic properties of the layered perovskite PbVO₃. The results of magnetic susceptibility and specific heat measurements as well as band-structure calculations consistently suggest that the S=1∕2 square lattice of vanadium atoms in PbVO₃ is strongly frustrated due to next-nearest-neighbor antiferromagnetic interactions. The ratio of next-nearest-neighbor (J₂) to nearest-neighbor (J₁) exchange integrals is estimated to be J₂∕J₁\ensuremath≈0.2--0.4. Thus, PbVO₃ is within or close to the critical region of the J₁\ensuremath-J₂ frustrated square lattice. Supporting this, no sign of long-range magnetic ordering was found down to 1.8\phantom\rule0.3em0exK.

Citations

• Li2VO(Si,Ge)O4, a Prototype of a Two-Dimensional Frustrated Quantum Heisenberg Antiferromagnet

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