Magnetic Compton Profile Study of Orbital Ordering State of 3<I>d</I> Electrons in YTiO<SUB>3</SUB>

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Author(s)

    • Tokura Yoshinori
    • Department of Applied Physics, University of Tokyo|Correlated Electron Research Center, National Institute of Advanced Industrial Science and Technology (AIST)|Multiferroics Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST)|Cross-Correlated Materials Research Group, RIKEN
    • Tanaka Kei
    • Graduate School of Engineering, Gunma University
    • Adachi Hiromichi
    • Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)
    • Kawata Hiroshi
    • Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)

Abstract

Orbital ordering state of 3<I>d</I> electrons in YTiO<SUB>3</SUB> has been studied by magnetic Compton profile (MCP) measurement for crystallographic directions of [100] (<I>a</I>-axis) and [001] (<I>c</I>-axis). The magnetic effect of the observed MCP leads to the spin moment that is equal to the saturated magnetic moment within the estimated errors, which strongly suggests quenching of the orbital moment. Shape of the observed MCPs shows directional anisotropy between the two axes. The MCPs are calculated by using an atomic model wave function of a linear combination of two 3<I>d</I>–<I>t</I><SUB>2<I>g</I></SUB> orbitals, <I>ud<SUB>yz</SUB></I>±<I>vd<SUB>zx</SUB></I> (<I>u</I><SUP>2</SUP>+<I>v</I><SUP>2</SUP>=1) for the Ti sites. The observed MCP is best reproduced by the calculated MCP with <I>u</I>=0.84±0.04 and <I>v</I>=0.54±0.04. This value of <I>u</I> is slightly larger than those obtained in the previous studies.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 77(2), 023705-023705, 2008

    THE PHYSICAL SOCIETY OF JAPAN

Codes

  • NII Article ID (NAID)
    130005436317
  • Text Lang
    ENG
  • ISSN
    0031-9015
  • Data Source
    J-STAGE 
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