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

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Kovacevic I., Babkevich P., Jeong M., Piatek J. O., Boero G., Ronnow H. M.,
Project Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials
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Original article (peer-reviewed)

Volume (Issue) 94(21)
Page(s) 214433
Title of proceedings PHYSICAL REVIEW B
DOI 10.1103/physrevb.94.214433

Open Access

Type of Open Access Repository (Green Open Access)


We present direct local-probe evidence for strongly hybridized nuclear-electronic spin states of an Ising ferromagnet LiHoF4 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.