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  Spin fluctuations in Sr1.6Ba0.4RuO4: An inelastic neutron scattering study with polarization analysis

Li, Z. W., Guo, H., Liu, C.-F., Bourdarot, F., Schmidt, W., Skoulatos, M., et al. (2017). Spin fluctuations in Sr1.6Ba0.4RuO4: An inelastic neutron scattering study with polarization analysis. Physical Review B, 95(4): 045105, pp. 1-5. doi:10.1103/PhysRevB.95.045105.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-5619-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-6E53-8
Genre: Journal Article

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 Creators:
Li, Z. W.1, Author              
Guo, H.1, Author              
Liu, C.-F.2, Author              
Bourdarot, F.3, Author
Schmidt, W.3, Author
Skoulatos, M.3, Author
Komarek, A. C.4, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
3External Organizations, ou_persistent22              
4Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863446              

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 Abstract: We present inelastic neutron scattering measurements on the ruthenate Sr1.6Ba0.4RuO4 which is on the hitherto almost unknown Ba-substituted side of the doping phase diagram of Sr(2-x)Ae(x)RuO(4) (Ae = Ca, Ba). Unlike the Ca-substituted side of the phase diagram no (quasi) static magnetic peaks can be observed in Sr1.6Ba0.4RuO4. Instead, incommensurate spin fluctuations can be observed around q(0) = (+/- 0.3,+/- 0.3,0).Both the absolute intensity of. chi" (Q,omega) and its energy and temperature dependence as well as the anisotropy ratio. chi(c)"/chi(a, b)" resemble the ones in Sr2RuO4. Hence, a random potential implied by the substitution of huge Ba ions as well as the induced increase of interatomic distances has less impact on the magnetic properties than octahedral tilts implied by Ca substitution. Moreover, any ferromagnetic spin fluctuations are either absent in Sr1.6Ba0.4RuO4 or below the detection limit.

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Language(s): eng - English
 Dates: 2017-01-042017-01-04
 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: 95 (4) Sequence Number: 045105 Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008