Spin-fluctuations drive the inverse magnetocaloric effect in Mn5Si3

Abstract

Inelastic neutron scattering measurements were performed on single crystals of the antiferromagnetic compound Mn5Si3 in order to investigate the relation between the spin dynamics and the magneto-thermodynamic properties. It is shown that among the two stable antiferromagnetic phases of this compound, the high temperature one has an unusual magnetic excitation spectrum where propagative spin-waves and diffuse spin-fluctuations coexist. Moreover, it is evidenced that the inverse magnetocaloric effect of Mn5Si3, the cooling by adiabatic magnetization, is associated with field induced spin-fluctuations.

References in corpus (3)

• Inverse magnetocaloric effect in ferromagnetic Ni-Mn-Sn alloys
• Anomalous Hall effect in the noncollinear antiferromagnet Mn5Si3
• Switching of a large anomalous Hall effect between metamagnetic phases of a non-collinear antiferromagnet

Cited by in corpus (12)

• Critical behavior and magnetocaloric effect across the magnetic transition in Mn${}_{1+x}$Fe${}_{4-x}$Si${}_3$
• Topological magnons driven by the Dzyaloshinskii-Moriya interaction in the centrosymmetric ferromagnet Mn${}_5$Ge${}_3$
• Complex magnetic structure and spin waves of the noncollinear antiferromagnet Mn5Si3
• Anomalous Nernst effect in the noncollinear antiferromagnet Mn${}_5$Si${}_3$
• Spin-waves in the collinear antiferromagnetic phase of Mn$_\bf{5}$Si$_\bf{3}$
• Magnetic phase diagram, magnetotransport and inverse magnetocaloric effect in the noncollinear antiferromagnet Mn${}_5$Si${}_3$
• An overview of the spin dynamics of antiferromagnetic Mn${}_5$Si${}_3$
• Optical signatures of spin symmetries in unconventional magnets
• Total interference between nuclear and magnetovibrational one-phonon scattering cross sections
• Eightfold Degenerate Dirac Nodal Line in Collinear Antiferromagnet Mn${}_5$Si${}_3$
• Paramagnetic fluctuations of the magnetocaloric compound MnFe${}_4$Si${}_3$
• Ultrafast ferromagnetic fluctuations preceding magnetoelastic first-order transitions