Interplay of structure and magnetism in LuFe4Ge2 tuned by hydrostatic pressure

• DOI: 10.1103/physrevb.107.125136
• Publication Date: 2023-03-29T17:21:17Z
• Authors: M. O. Ajeesh; P. Materne; R. D. dos Reis; K. Weber; S. Dengre; R. Sarkar; R. Khasanov; I. Kraft; A. M. León; W. Bi; J. Zhao; E. E. Alp; S. Medvedev; V. Ksenofontov; H. Rosner; H.-H. Klauss; C. Geibel; M. Nicklas
• Keywords: Magnetism; Tetragonal crystal system; Hydrostatic pressure

Competing ground states often lead to the emergence of novel unconventional phases. The presence magnetic frustration in such materials brings about additional complexity. Here, authors present a comprehensive study on ground-state properties LuFe${}_{4}$Ge${}_{2}$, ternary intermetallic compound with and quasi-one-dimensional structure, elucidating interplay structure magnetism. In contrast well-studied two-dimensional iron pnictides competing exchange interactions, LuFe${}_{4}$Ge${}_{2}$ exhibits chains geometrically frustrated Fe tetrahedra. It displays magnetostructural transition at ambient pressure change symmetry from tetragonal orthorhombic, similar that iron-pnictides, which evolves an unexpected way under application hydrostatic pressure. material family offers new perspective entanglement crystal