Regensburg 2022 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 21: Correlated Electrons: Poster Session

TT 21.7: Poster

Mittwoch, 7. September 2022, 15:00–18:00, P1

Crystal growth and characterization of LnCo2P2 (Ln = Pr, Nd) — •Fabian Fiedler, Marius Peters, Kristin Kliemt, and Cornelius Krellner — Physikalisches Institut, Goethe-Universität Frankfurt, 60438 Frankfurt/Main, Germany

In condensed matter systems, the 4f-driven temperature scales at the surfaces of correlated materials have increasingly come into the focus of research efforts. Here, we present the crystal growth of LnCo2P2 (Ln = Pr, Nd) in tin flux and the corresponding structural/physical characterization.

Using temperatures of up to 1400^∘C and a vertical temperature-gradient, we optimized the growth, resulting in large high-quality single crystals, allowing for physical characterization, especially by means of thermodynamic measurements and angle-resolved photoemission spectroscopy.

The structural and chemical characterization is performed by X-ray powder diffractometry, energy-dispersive X-ray spectroscopy and the Laue-method.

Magnetic properties of these systems, arising from the combination of the 4f-moments of Ln³⁺-ions and the 3d-moments of Co³⁺, are investigated by measurements of magnetization, heat capacity and resistivity.