Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 17: Poster Session: Correlated Electrons 1

TT 17.4: Poster

Montag, 1. April 2019, 15:00–18:30, Poster D

TbRh₂Si₂: Single crystal growth and characterization — •Alexej Kraiker, Kristin Kliemt, and Cornelius Krellner — Physikalisches Institut, Goethe Universität Frankfurt, 60438 Frankfurt am Main, Germany

In the last decades, many studies on RT₂Si₂ (R = rare earth, T = transition metal) ternary silicides have been made. The compounds which crystallize in the bodycentered tetragonal ThCr₂Si₂ structure exhibit exceptional magnetic properties such as superconductivity, valence fluctuations or the Kondo effect. In recent years, we have started to systematically investigate the magnetic properties of RRh₂Si₂ compounds, which present exciting surface properties, strongly influenced by the 4f-magetism [1]. So far, the magnetism of TbRh₂Si₂ has been studied on polycrystalline samples using neutron scattering [2]. The compound shows antiferromagnetic order below T_N = 92 K with a magnetic ordering vector k = (001). In this contribution, we present the details of the crystal growth of TbRh₂Si₂ single crystals by Bridgman method from indium flux. We show the results of specific heat, specific resistivity and magnetization measurements, with a focus on the magnetic transition.
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