Incipient orbital order in half-metallic Ba2FeReO6
ARTIGO
Inglês
Agradecimentos: This work was supported by FAPESP, CNPq, FINEP, and ABTLuS, Brazil, and DST, New Delhi, India
Abstract: Largely unquenched Re 5d orbital magnetic moments in half-metallic Ba2FeReO6 drive a symmetry lowering transition from a cubic paramagnet to a compressed tetragonal (c/a < 1) ferrimagnet below T-C similar to 305 K, with a giant linear magnetoelastic constant and the spins lying...
Abstract: Largely unquenched Re 5d orbital magnetic moments in half-metallic Ba2FeReO6 drive a symmetry lowering transition from a cubic paramagnet to a compressed tetragonal (c/a < 1) ferrimagnet below T-C similar to 305 K, with a giant linear magnetoelastic constant and the spins lying spontaneously along the unique tetragonal axis. The large orbital magnetization and degree of structural deformation indicate proximity to a metal-insulator transition. These results point to an incipient orbitally ordered state in the metallic ferrimagnetic phase
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
FINANCIADORA DE ESTUDOS E PROJETOS - FINEP
Aberto
Incipient orbital order in half-metallic Ba2FeReO6
Incipient orbital order in half-metallic Ba2FeReO6
Fontes
Physical review letters Vol. 98, n. 1 (Jan., 2007), n. art. 017204, p. 1-4 |