2010/09/22 by N. Hollmann, Z. Hu, Zhiwei Hu +11 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Antiferromagnetism #Condensed matter physics #Coupling (piping) #Dielectric #Ferroelectricity #Ion #Magnetic and transport properties of perovskites and related materials #Magnetic moment #Materials science #Multiferroics #Multiferroics and related materials #Multiplet #Physics #Quantum mechanics #Spectral line #Spin–orbit interaction #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.82.184429
arxiv created 2010/09/22 · openalex publication_date 2010/11/23 · arxiv updated 2015/05/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Soft x-ray absorption experiments on the transition-metal L2,3 edge of multiferroic MnWO4 and antiferromagnetic CoWO4 are presented. The observed linear polarization dependence, analyzed by full-multiplet calculations, is used to determine the ground-state wave function of the magnetic Mn2+ and Co2+ ions. The impact of the local structure and the spin-orbit coupling on the orbital moment is discussed in terms of the single-ion anisotropy. It is shown that the orbital moment in CoWO4 is responsible for the collinear antiferromagnetism, while the small size of spin-orbit coupling effects make spiral magnetic order in MnWO4 possible, enabling the material to be multiferroic.