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  Low-temperature specific heat for off- and near-stoichiometric UAsSe

Cichorek, T., Henkie, Z., Wojakowski, A., Pietraszko, A., Gegenwart, P., Lang, M., et al. (2002). Low-temperature specific heat for off- and near-stoichiometric UAsSe. Solid State Communications, 121(12), 647-651. doi:10.1016/S0038-1098(02)00067-4.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-31CB-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-32C8-6
Genre: Journal Article

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 Creators:
Cichorek, T.1, Author              
Henkie, Z., Author
Wojakowski, A., Author
Pietraszko, A., Author
Gegenwart, P.2, Author              
Lang, M.1, Author              
Steglich, F.3, Author              
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              

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Free keywords: magnetically ordered materials; UAsSe; electronic transports; specific heat
 Abstract: Two UAsSe single crystals with slight variations of the As/Se content ratio have been investigated. The development of the low-T upturn in the resistivity is accompanied by smooth decrease of the Curie temperature. The sample with T-C = 116.9 K and almost invisible upturn could be regarded as a near- stoichiometric, slightly disordered one, whereas the specimen with T-C = 101.5 K appears to be an off-stoichiometric, more strongly disordered one. Clear differences between both electronic and lattice contributions to the specific heat for off- and near-stoichiometric UAsSe crystals have also been found. We ascribe the smaller low-T specific heat for the off- stoichiometric sample in comparison to the near-stoichiometric one to a weaker hybridization between 5f and conduction- electron states accompanied by the relative shift of 5f band with regard to E-F. (C) 2002 Elsevier Science Ltd. All rights reserved.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 16999
ISI: 000175449000001
DOI: 10.1016/S0038-1098(02)00067-4
 Degree: -

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Title: Solid State Communications
  Alternative Title : Solid State Commun.
Source Genre: Journal
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Pages: - Volume / Issue: 121 (12) Sequence Number: - Start / End Page: 647 - 651 Identifier: ISSN: 0038-1098