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Wilkins SB, Spencer PD, Hatton PD, et al. Direct observation of orbital ordering in La0.5Sr1.5MnO4 using soft x-ray diffraction. Phys Rev Lett. 2003;91(16):167205doi: 10.1103/PhysRevLett.91.167205.
Wilkins, S. B., Spencer, P. D., Hatton, P. D., Collins, S. P., Roper, M. D., Prabhakaran, D., & Boothroyd, A. T. (2003). Direct observation of orbital ordering in La0.5Sr1.5MnO4 using soft x-ray diffraction. Physical review letters, 91(16), 167205. https://doi.org/10.1103/PhysRevLett.91.167205
Wilkins, S B, et al. "Direct observation of orbital ordering in La0.5Sr1.5MnO4 using soft x-ray diffraction." Physical review letters vol. 91,16 (2003): 167205. doi: https://doi.org/10.1103/PhysRevLett.91.167205
Wilkins SB, Spencer PD, Hatton PD, Collins SP, Roper MD, Prabhakaran D, Boothroyd AT. Direct observation of orbital ordering in La0.5Sr1.5MnO4 using soft x-ray diffraction. Phys Rev Lett. 2003 Oct 17;91(16):167205. doi: 10.1103/PhysRevLett.91.167205. Epub 2003 Oct 16. PMID: 14611437.
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Phys Rev Lett. 2003 Oct 17;91(16):167205. doi: 10.1103/PhysRevLett.91.167205. Epub 2003 Oct 16.

Direct observation of orbital ordering in La0.5Sr1.5MnO4 using soft x-ray diffraction.

Physical review letters

S B Wilkins, P D Spencer, P D Hatton, S P Collins, M D Roper, D Prabhakaran, A T Boothroyd

Affiliations

  1. Department of Physics, University of Durham, Rochester Building, South Road, Durham, DH1 3LE, United Kingdom. [email protected]

PMID: 14611437 DOI: 10.1103/PhysRevLett.91.167205

Abstract

We report the first direct resonant soft x-ray scattering observations of orbital ordering. We have studied the low temperature phase of La0.5Sr1.5MnO4, a compound that displays charge and orbital ordering. Previous claims of orbital ordering in such materials have relied on observations at the manganese K edge. These claims have been questioned in several theoretical studies. Instead we have employed resonant soft x-ray scattering at the manganese L(III) and L(II) edges which probes the orbital ordering directly. Energy scans at constant wave vector are compared to theoretical predictions and suggest that at all temperatures there are two separate contributions to the scattering: direct orbital ordering and strong cooperative Jahn-Teller distortions of the Mn3+ ions.

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