Spin-fluctuations drive the inverse magnetocaloric effect in Mn5Si3

N. Biniskos; K. Schmalzl; S. Raymond; S. Petit; P. Steffens; J. Persson; T. Brueckel

doi:10.1103/PhysRevLett.120.257205

Spin-fluctuations drive the inverse magnetocaloric effect in Mn5Si3

Materials Science 2018-06-27 v1

Authors: N. Biniskos , K. Schmalzl , S. Raymond , S. Petit , P. Steffens , J. Persson , T. Brueckel

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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.

Keywords

spin excitations in condensed matter magnetic materials and spin systems unconventional superconductivity

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@article{arxiv.1802.07511,
  title  = {Spin-fluctuations drive the inverse magnetocaloric effect in Mn5Si3},
  author = {N. Biniskos and K. Schmalzl and S. Raymond and S. Petit and P. Steffens and J. Persson and T. Brueckel},
  journal= {arXiv preprint arXiv:1802.07511},
  year   = {2018}
}

Spin-fluctuations drive the inverse magnetocaloric effect in Mn5Si3

Abstract

Keywords

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