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arXiv · 1607.00124

Probing strongly hybrid nuclear-electronic states in a model quantum ferromagnet

I. Kovacevic·P. Babkevich·M. Jeong·J. O. Piatek·G. Boero·H. M. Rønnow
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Abstract

We present direct local-probe evidence for strongly hybridized nuclear-electronic spin states of an Ising ferromagnet LiHoF$_4$ in a transverse magnetic field. The nuclear-electronic states are addressed via a magnetic resonance in the GHz frequency range using coplanar resonators and a vector network analyzer. The magnetic resonance spectrum is successfully traced over the entire field-temperature phase diagram, which is remarkably well reproduced by mean-field calculations. Our method can be directly applied to a broad class of materials containing rare-earth ions for probing the substantially mixed nature of the nuclear and electronic moments.

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I. Kovacevic, P. Babkevich, M. Jeong, J. O. Piatek, G. Boero, H. M. Rønnow. 2016-07-01. Probing strongly hybrid nuclear-electronic states in a model quantum ferromagnet. https://doi.org/10.1103/physrevb.94.214433

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