Antiferromagnetic resonances in twinned EuFe2As2 single crystal
I.A. Golovchanskiy, N.N. Abramov, V.A. Vlasenko, K. Pervakov, I.V., Shchetinin, P.S. Dzhumaev, O.V. Emelianova, D. Baranov, D.S. Kalashnikov,, K.B. Polevoy, V.M. Pudalov, V.S. Stolyarov
TL;DR
This paper reports on ferromagnetic resonance spectroscopy of EuFe2As2 single crystals, revealing antiferromagnetic resonances linked to Eu sub-lattice and confirming a proposed spin Hamiltonian with specific exchange interactions.
Contribution
It provides experimental evidence for antiferromagnetic resonances in EuFe2As2 and validates a theoretical spin Hamiltonian model.
Findings
Observation of ferromagnetic resonance responses.
Identification of antiferromagnetic resonances in Eu sub-lattice.
Validation of the proposed spin Hamiltonian model.
Abstract
In this work, we report ferromagnetic resonance spectroscopy of EuFe2As2 single crystals. We observe ferromagnetic resonance responses, which are attributed to antiferromagnetic resonances of Eu sub-lattice with orthorhombic crystal structure and with different orientations of twin domains relative to the external field. We confirm validity of the recently-proposed spin Hamiltonian with anisotropic Eu-Eu exchange interaction and biquadratic Eu-Fe exchange interaction.
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Taxonomy
TopicsIron-based superconductors research · Rare-earth and actinide compounds · Magnetic Properties of Alloys