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  Uniaxial and fourfold basal anisotropy in GdRh2Si2

Ehlers, D., Kliemt, K., Krellner, C., Geibel, C., & Sichelschmidt, J. (2020). Uniaxial and fourfold basal anisotropy in GdRh2Si2. Journal of Physics: Condensed Matter, 32: 495801, pp. 1-10. doi:10.1088/1361-648X/abb17d.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-04EE-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-04F2-3
Genre: Journal Article

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 Creators:
Ehlers, D.1, Author              
Kliemt, K2, Author
Krellner, C2, Author
Geibel, C.3, Author              
Sichelschmidt, J.4, Author              
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2External Organizations, ou_persistent22              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
4Jörg Sichelschmidt, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863468              

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 Abstract: The magnetocrystalline anisotropy of GdRh2Si2 is examined in detail via the electron spin resonance (ESR) of its well-localised Gd3+ moments. Below T N = 107 K, long range magnetic order sets in with ferromagnetic layers in the (aa)-plane stacked antiferromagnetically along the c-axis of the tetragonal structure. Interestingly, the easy-plane anisotropy allows for the observation of antiferromagnetic resonance at X- and Q-band microwave frequencies. In addition to the easy-plane anisotropy we have also quantified the weaker fourfold anisotropy within the easy plane. The obtained resonance fields are modelled in terms of eigenoscillations of the two antiferromagnetically coupled sublattices. Conversely, this model provides plots of the eigenfrequencies as a function of field and the specific anisotropy constants. Such calculations have rarely been done. Therefore our analysis is prototypical for other systems with fourfold in-plane anisotropy. It is demonstrated that the experimental in-plane ESR data may be crucial for a precise knowledge of the out-of-plane anisotropy.

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Language(s): eng - English
 Dates: 2020-09-102020-09-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1088/1361-648X/abb17d
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Title: Journal of Physics: Condensed Matter
  Abbreviation : J. Phys. Condens. Matter.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 32 Sequence Number: 495801 Start / End Page: 1 - 10 Identifier: ISSN: 0953-8984
CoNE: https://pure.mpg.de/cone/journals/resource/954928562478