Artikel,

Impact of hyperfine contributions on the ground state of spin-ice compounds

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Phys. Rev. B, 108 (21): 214412 (14.12.2023)
DOI: 10.1103/PhysRevB.108.214412

Zusammenfassung

Here, the authors determine thermodynamic properties of pyrochlore spin-ice compounds at subkelvin temperatures. In particular, the magnetic field dependence of the heat capacity and magnetic entropy of Ho$_2$Ti$_2$O$_7$ and Pr$_2$Hf$_2$O$_7$ shows the existence of additional states beyond the electronic spin and orbital degrees of freedom. One can understand the data through the presence of hyperfine states and complex hyperfine-coupled term schemes.

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