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  Absence of orbital rotation in superconducting CeCu2Ge2

Rueff, J.-P., Ablett, J. M., Strigari, F., Deppe, M., Haverkort, M. W., Tjeng, L. H., et al. (2015). Absence of orbital rotation in superconducting CeCu2Ge2. Physical Review B, 91(20): 201108, pp. 1-4. doi:10.1103/PhysRevB.91.201108.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-A4A8-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-003B-D
Genre: Journal Article

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 Creators:
Rueff, J.-P.1, Author
Ablett, J. M.1, Author
Strigari, F.1, Author
Deppe, M.2, Author              
Haverkort, M. W.3, Author              
Tjeng, L. H.4, Author              
Severing, A.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
3Maurits Haverkort, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863455              
4Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              

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 Abstract: We address the recently proposed orbital transition scenario in heavy fermion compounds exhibiting two superconducting domes. Our method of choice is nonresonant inelastic x-ray scattering (NIXS) which probes charge densities and can be modeled quantitatively. Our NIXS results of CeCu2Ge2, a model system of this class of materials, are well described by considering the same sequence of orbitals at all temperatures, thus putting into question whether orbital transitions are related to the formation of the second superconducting dome. The discrepancy between experimental findings and prediction could be due to the lack of accuracy in the theoretical description of the 4f states.

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Language(s): eng - English
 Dates: 2015-05-262015-05-26
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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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: 91 (20) Sequence Number: 201108 Start / End Page: 1 - 4 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008