Helical spin order in EuFe2As2 and EuRbFe4As4 single crystals

Autor:	Golovchanskiy, I. A., Shchetinin, I. V., Pervakov, K. S., Vlasenko, V. A., Dzhumaev, P. S., Emelianova, O. V., Baranov, D. S., Astrakhantseva, A. S., Pudalov, V. M., Stolyarov, V. S.
Rok vydání:	2021
Předmět:	Condensed Matter - Superconductivity Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	In this work, fabrication and characterization of magnetic properties of EuFe2As2 and EuRbFe4As4 single crystals is reported. Magnetization measurements of samples with well defined thin film geometry and crystal orientation demonstrate a striking similarity in ferromagnetic properties of Eu subsystems in these two compounds. Measurements with magnetic field applied along ab crystal planes reveal meta-magnetic transition in both compounds. Numerical studies employing the Jz1-Jz2 Heisenberg model suggest that the ground state of the magnetic order in Eu subsystem for both compounds is the helical spin order with the helical angle about 2pi/5, while the meta-magnetic transition is the helix-to-fan first order phase transition. Comment: 12 pages, 6 figures, 44 references
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2108.03184 Zobrazit plný text záznamu View this record from Arxiv