SKM 2023 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 42: Poster: Correlated Electrons I

TT 42.1: Poster

Wednesday, March 29, 2023, 15:00–18:00, P2/OG2

Single crystal growth and characterization of CeCoIn₅ and Ce₂IrIn₈ — •Anja Philipp, Kristin Kliemt, and Cornelius Krellner — Max-von-Laue-Straße 1

The heavy-fermion series Ce_nT_mIn_3n+2 (n=1,2; T = Co, Rh, Ir) with the unique tetragonal crystal structure, leading to a quasi-two dimensional Fermi surface, received growing attention over the past decades [1],[2],[3]. In these compounds, there are strong electronic interactions between conduction electrons and localized 4f-electrons of the Ce ions, which lead to a variety of interesting phenomena like spin and valence fluctuations, Kondo effect, magnetic order, non Fermi-liquid behaviour and unconventional superconductivity [3].

In this contribution, the results of the self-flux growth of CeCoIn₅ and Ce₂InIr₈ single crystals are shown. The crystallographic orientation of the single crystals was determined using microscopy and Laue X-ray diffraction. The physical properties like resistivity, heat capacitiy and magnetic susceptibility down to 2K were measured for both compounds and were analyzed in this work.
[1] R.T. Maculso et al., Chem Mater. 15, 1394 (2003)
[2] G.D. Morris et al., Phys. Rev. B 69, 214415 (2004)
[3] A. Ikeda et al., Phys. Soc. Jap. 70, 2248 (2001)