Raman scattering in the mott insulators LaTiO3 and YTiO3:: Evidence for orbital excitations

被引：54
|
作者：
Ulrich, C.
Goessling, A.
Grueninger, M.
Guennou, M.
Roth, H.
Cwik, M.
Lorenz, T.
Khaliullin, G.
Keimer, B.
机构：
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
[2] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 15期
关键词：
D O I：
10.1103/PhysRevLett.97.157401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Raman scattering is used to observe pronounced electronic excitations around 230 meV-well above the two-phonon range-in the Mott insulators LaTiO3 and YTiO3. Based on the temperature, polarization, and photon energy dependence, the modes are identified as orbital excitations. The observed profiles bear a striking resemblance to magnetic Raman modes in the insulating parent compounds of the superconducting cuprates, indicating an unanticipated universality of the electronic excitations in transition metal oxides.
引用
收藏
页数：4
相关论文
共 50 条
  • [1] Origin of orbital ordering in YTiO3 and LaTiO3
    Zhang, Xue-Jing
    Koch, Erik
    Pavarini, Eva
    PHYSICAL REVIEW B, 2020, 102 (03)
  • [2] Structural distortions and orbital ordering in LaTiO3 and YTiO3
    Okatov, S
    Poteryaev, A
    Lichtenstein, A
    EUROPHYSICS LETTERS, 2005, 70 (04): : 499 - 505
  • [3] Orbital ordering and local magnetic properties of Mott-Hubbard insulators YTiO3 and LaTiO3:NMR study
    Itoh, M
    Tsuchiya, M
    Tanaka, H
    Motoya, K
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1999, 68 (08) : 2783 - 2789
  • [4] ESR study of Mott-Hubbard insulators YTiO3 and LaTiO3 in submillimeter wave region
    Okubo, S
    Kimura, S
    Ohta, H
    Itoh, M
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 177 : 1373 - 1374
  • [5] Orbital excitations in YTiO3 and LaTiO3 probed by resonant inelastic soft x-ray scattering
    Ulrich, C.
    Ghiringhelli, G.
    Piazzalunga, A.
    Braicovich, L.
    Brookes, N. B.
    Roth, H.
    Lorenz, T.
    Keimer, B.
    PHYSICAL REVIEW B, 2008, 77 (11):
  • [6] NMR study of ferromagnetic YTiO3 and antiferromagnetic LaTiO3
    Furukawa, Y
    Okamura, I
    Kumagai, K
    Taguchi, Y
    Tokura, Y
    PHYSICA B, 1997, 237 : 39 - 40
  • [7] Origin of orbital ordering in YTiO3 and LaTiO3 (vol 102, 035113, 2020)
    Zhang, Xue-Jing
    Koch, Erik
    Pavarini, Eva
    PHYSICAL REVIEW B, 2022, 105 (15)
  • [8] NMR study of ferromagnetic YTiO3 and antiferromagnetic LaTiO3
    Hokkaido Univ, Sapporo, Japan
    Phys B Condens Matter, (39-40):
  • [9] Muon spin relaxation study of LaTiO3 and YTiO3
    Baker, P. J.
    Lancaster, T.
    Blundell, S. J.
    Hayes, W.
    Pratt, F. L.
    Itoh, M.
    Kuroiwa, S.
    Akimitsu, J.
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (46)
  • [10] Raman scattering of orbital waves in YTiO3
    Sugai, S
    Kikuchi, A
    Mori, Y
    PHYSICAL REVIEW B, 2006, 73 (16):
12345