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  Evidence for a dimensionality crossover at the disappearance of magnetism in the Kondo lattice alloy CeCo1-xFexSi

Sereni, J. G., Gomez Berisso, M., Betancourth, D., Correa, V. F., Caroca-Canales, N., & Geibel, C. (2014). Evidence for a dimensionality crossover at the disappearance of magnetism in the Kondo lattice alloy CeCo1-xFexSi. Physical Review B, 89(3): 035107, pp. 1-6. doi:10.1103/PhysRevB.89.035107.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-8607-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-4CEF-D
Genre: Journal Article

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Sereni, J. G.1, Author
Gomez Berisso, M.1, Author
Betancourth, D.1, Author
Correa, V. F.1, Author
Caroca-Canales, N.2, Author              
Geibel, C.3, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              

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 Abstract: Structural, magnetic, and thermal measurements performed on CeCo1-xFexSi alloys are reported. Three regions can be recognized: (i) Co rich (x <= 0.20) with a decreasing long-range antiferromagnetic order which vanishes at finite temperatures, (ii) an intermediate region (0.20 < x <= 0.30) showing a broad magnetic anomaly (C-A) in specific heat, and (iii) the nonmagnetic region progressively changing from a non-Fermi-liquid-type behavior towards a Fermi-liquid one as Fe concentration increases. The C-A anomaly emerges as an incipient contribution above T-N already at x = 0.10, which indicates that this contribution is related to short-range correlations likely of quasi-two-dimensional type. Both T-N transition and C-A anomaly are practically unaffected by an applied magnetic field up to B approximate to 10 T.

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 Dates: 2014-01-07
 Publication Status: Published in print
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Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 89 (3) Sequence Number: 035107 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008