Element-specific field-induced spin reorientation and an unusual tetracritical point in MnCr2S4

Sh. Yamamoto; H. Suwa; T. Kihara; T. Nomura; Y. Kotani; T. Nakamura; Y. Skourski; S. Zherlitsyn; L. Prodan; V. Tsurkan; H. Nojiri; A. Loidl; J. Wosnitza

doi:10.1103/PhysRevB.103.L020408

Element-specific field-induced spin reorientation and an unusual tetracritical point in MnCr2S4

Strongly Correlated Electrons 2021-02-17 v3

Authors: Sh. Yamamoto , H. Suwa , T. Kihara , T. Nomura , Y. Kotani , T. Nakamura , Y. Skourski , S. Zherlitsyn , L. Prodan , V. Tsurkan , H. Nojiri , A. Loidl , J. Wosnitza

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Abstract

The ferrimagnetic spinel MnCr2S4 shows a variety of magnetic-field-induced phase transitions owing to bond frustration and strong spin-lattice coupling. However, the site-resolved magnetic properties at the respective field-induced phases in high magnetic fields remain elusive. Our soft x-ray magnetic circular dichroism studies up to 40 T directly evidence element-selective magnetic-moment reorientations in the field-induced phases. The complex magnetic structures are further supported by entropy changes extracted from magnetocaloric-effect measurements. Moreover, thermodynamic experiments reveal an unusual tetracritical point in the H-T phase diagram of MnCr2S4 due to strong spin-lattice coupling.

Keywords

MnCr2S4 spin reorientation tetracritical point soft x-ray magnetic circular dichroism spin-lattice coupling magnetocaloric effect

Cite

@article{arxiv.2008.13285,
  title  = {Element-specific field-induced spin reorientation and an unusual tetracritical point in MnCr2S4},
  author = {Sh. Yamamoto and H. Suwa and T. Kihara and T. Nomura and Y. Kotani and T. Nakamura and Y. Skourski and S. Zherlitsyn and L. Prodan and V. Tsurkan and H. Nojiri and A. Loidl and J. Wosnitza},
  journal= {arXiv preprint arXiv:2008.13285},
  year   = {2021}
}

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18 pages, 8 figures

Element-specific field-induced spin reorientation and an unusual tetracritical point in MnCr2S4

Abstract

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