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TT: Fachverband Tiefe Temperaturen

TT 37: Correlated Electrons: Poster

TT 37.1: Poster

Mittwoch, 19. März 2025, 15:00–18:00, P4

Unveiling the Origin of Magnetic Anisotropy in CeSb₂ — •Jan T. Weber^1,2, Kristin Kliemt¹, Sergey L. Bud’ko^2,3, Paul C. Canfield^2,3, and Cornelius Krellner¹ — ¹Physikalisches Institut, Goethe-Universität Frankfurt, Max-von-Laue Straße 1, 60438 Frankfurt am Main, Germany — ²Ames National Laboratory, U.S. DOE, Ames, Iowa 50011, USA — ³Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA

CeSb₂ is a well-established Kondo-lattice system, crystallizing in the orthorhombic SmSb₂ structure (space group 64) [1] and forming plate-like crystals. Extensive past studies have revealed a rich magnetic phase diagram for fields within the plane and a strong suppression of magnetization out of plane [2-5]. However, the in-plane magnetization anisotropy remains poorly understood. Nearly identical lattice parameters present challenges in aligning the crystals within the plane, and unexpected magnetization curves - seemingly inconsistent with symmetry arguments - pose additional questions.

In this contribution, we present rotational magnetization measurements together with magnetic measurements as a function of field, temperature and orientation, providing new insights into the in-plane anisotropy addressing these open questions.

[1] R. Wang et. al., Inorg. Chem. 6, 1685 (1967).

[2] S. L. Bud’ko et. al., Phys. Rev. B 57, 13624 (1998).

[3] Y. Zhang et al., Chin. Phys. B 26, 067102 (2017).

[4] B. Liu et al., J. Phys.: Condens. Matter 32, 405605 (2020).

[5] C. Trainer et al., Phys. Rev. B 104, 205134 (2021).

Keywords: CeSb2; Magnetic Anisotropy; Kondo-lattice