Emergent magnetic anisotropy in the cubic heavy-fermion metal CeIn3

Moll, Philip J. W.; Helm, Toni; Zhang, Shang-Shun; Batista, Cristian D.; Harrison, Neil; McDonald, Ross D.; Winter, Laurel E.; Ramshaw, B. J.; Chan, Mun K.; Balakirev, Fedor F.; Batlogg, Bertram; Bauer, Eric D.; Ronning, Filip

doi:10.1038/s41535-017-0052-5

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Emergent magnetic anisotropy in the cubic heavy-fermion metal CeIn₃

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https://doi.org/10.1038/s41535-017-0052-5
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Moll, P. J. W., Helm, T., Zhang, S.-S., Batista, C. D., Harrison, N., McDonald, R. D., et al. (2017). Emergent magnetic anisotropy in the cubic heavy-fermion metal CeIn₃. npj Quantum Materials, 2: 46. doi:10.1038/s41535-017-0052-5.

Cite as: https://hdl.handle.net/21.11116/0000-000B-7939-E

Abstract

Metals containing cerium exhibit a diverse range of fascinating phenomena including heavy fermion behavior, quantum criticality, and novel states of matter such as unconventional superconductivity. The cubic system CeIn₃ has attracted significant attention as a structurally isotropic Kondo lattice material possessing the minimum required complexity to still reveal this rich physics. By using magnetic fields with strengths comparable to the crystal field energy scale, we illustrate a strong field-induced anisotropy as a consequence of non-spherically symmetric spin interactions in the prototypical heavy fermion material CeIn₃. This work demonstrates the importance of magnetic anisotropy in modeling f-electron materials when the orbital character of the 4f wavefunction changes (e.g., with pressure or composition). In addition, magnetic fields are shown to tune the effective hybridization and exchange interactions potentially leading to new exotic field tuned effects in f-based materials.