Emergent magnetic anisotropy in the cubic heavy-fermion metal CeIn3
Emergent magnetic anisotropy in the cubic heavy-fermion metal CeIn3
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DOI：
10.1038/s41535-017-0052-5
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发表时间：
2017-08-21
影响因子：
5.7
通讯作者：
Ronning, Filip
中科院分区：
文献类型：
--
作者：
Moll, Philip J. W.;Helm, Toni;Ronning, Filip
含铈的金属表现出各种各样的迷人现象，包括重费米子行为，量子临界性和新的物质状态，如非常规超导性。立方系统CeIn3作为结构各向同性的近藤晶格材料引起了人们的极大关注，该材料具有最低的复杂性，仍然可以揭示这种丰富的物理学。通过使用磁场的强度与晶体场的能量尺度，我们说明了一个强大的场致各向异性的结果，非球对称的自旋相互作用的原型重费米子材料CeIn 3。这项工作证明了当4f波函数的轨道特性改变时（例如，压力或组成）。此外，磁场调谐有效的杂化和交换相互作用可能导致新的外来场调谐f基材料的影响。
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.