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Title: Jahn-Teller versus quantum effects in the spin-orbital material LuVO3

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [2];  [3];  [4];  [2];  [5];  [6];  [4];  [3];  [3];  [7];  [5];  [5];  [3];  [8];  [9];  [10];  [10];  [11]
  1. Technische Univ. Munchen, Garching (Germany); Paul Scherrer Institute, Villigen (Switzerland)
  2. Paul Scherrer Institute, Villigen (Switzerland)
  3. Institut Laue-Langevin, Grenoble Cedex (France)
  4. Helmholtz-Zentrum Berlin fur Materialien und Energie, Berlin (Germany)
  5. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  6. Institut Laue-Langevin, Grenoble Cedex (France); Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne (Switzerland)
  7. Univ. of Liverpool, Liverpool (United Kingdom)
  8. Univ. zu Koln, Koln (Germany)
  9. Paul Scherrer Institute, Villigen (Switzerland); Univ. of Geneva, Geneva (Switzerland)
  10. Iowa State Univ., Ames, IA (United States)
  11. Univ. of London - Egham, Surrey (United Kingdom)

In this article, we report on combined neutron and resonant x-ray scattering results, identifying the nature of the spin-orbital ground state and magnetic excitations in LuVO3 as driven by the orbital parameter. In particular, we distinguish between models based on orbital-Peierls dimerization, taken as a signature of quantum effects in orbitals, and Jahn-Teller distortions, in favor of the latter. In order to solve this long-standing puzzle, polarized neutron beams were employed as a prerequisite in order to solve details of the magnetic structure, which allowed quantitative intensity analysis of extended magnetic-excitation data sets. The results of this detailed study enabled us to draw definite conclusions about the classical versus quantum behavior of orbitals in this system and to discard the previous claims about quantum effects dominating the orbital physics of LuVO3 and similar systems.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
290605; AC02-06CH11357; AC02-07CH11358
OSTI ID:
1227295
Alternate ID(s):
OSTI ID: 1180036
Report Number(s):
IS-J-8656; PRBMDO
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 16; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (2)

Non-collinear magnetism in multiferroic perovskites journal February 2016
Lattice distortion in the spin-orbital entangled state in R VO 3 perovskites journal November 2019