2015/10/11 by T. Haku, Tendai Haku, Minoru Soda +11 · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Hamiltonian (control theory) #Inelastic neutron scattering #Inelastic scattering #Magnetic field #Multiferroics and related materials #Neutron scattering #Nuclear materials and radiation effects #Pyrochlore #Scattering #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.7566/jpsj.85.034721
published as J. Phys. Soc. Jpn., Vol.85, No.3 (2015) · 5 pages, 4 figures
arxiv created 2015/10/11 · openalex publication_date 2016/02/29 · arxiv updated 2016/03/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Inelastic neutron scattering measurement is performed on a breathing pyrochlore antiferromagnet Ba3Yb2Zn5O11. The observed dispersionless excitations are explained by a crystalline electric field (CEF) Hamiltonian of Kramers ion Yb3+ of which the local symmetry exhibits C3v point group symmetry. The magnetic susceptibility previously reported is consistently reproduced by the energy scheme of the CEF excitations. The obtained wave functions of the ground state Kramers doublet exhibit the planer-type anisotropy. The result demonstrates that Ba3Yb2Zn5O11 is an experimental realization of breathing pyrochlore antiferromagnet with a pseudospin S = 1/2 having easy-plane anisotropy.