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  Direct determination of the spin structure of Nd2Ir2O7 by means of neutron diffraction

Guo, H., Ritter, C., & Komarek, A. C. (2016). Direct determination of the spin structure of Nd2Ir2O7 by means of neutron diffraction. Physical Review B, 94(16): 161102, pp. 1-5. doi:10.1103/PhysRevB.94.161102.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-A4F6-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-BCD1-3
Genre: Journal Article

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 Creators:
Guo, H.1, Author              
Ritter, C.2, Author
Komarek, A. C.3, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2External Organizations, ou_persistent22              
3Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863446              

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 Abstract: We report on the spin structure of the pyrochlore iridate Nd2Ir2O7 that could be directly determined by means of powder neutron diffraction. Our magnetic structure refinement unravels a so-called all-in/all-out magnetic structure that appears in both the Nd and the Ir sublattice. The ordered magnetic moments at 1.8 K amount to 0.34(1) mu(B)/Ir4+ and 1.27(1) mu(B)/Nd3+. The Nd3+ moment size at 1.8 K is smaller than that expected for the Nd3+ ground state doublet. On the other hand, the size of the ordered moments of the Ir4+ ions at 1.8 K agrees very well with the value expected for a J(eff) = 1/2 state based on the presence of strong spin-orbit coupling in this system. Finally, our measurements reveal a parallel alignment of the Nd3+ moments with the net moment of its six nearest neighboring Ir4+ ions.

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Language(s): eng - English
 Dates: 2016-10-032016-10-03
 Publication Status: Published in print
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 94 (16) Sequence Number: 161102 Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008