Phase diagram of URu<sub>2-<i>x</i></sub> Fe <sub><i>x</i></sub> Si<sub>2</sub> in high magnetic fields.
basic_science · Level V
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- Record sourced from PubMed, PMID 28847927.
- Also identified by DOI 10.1073/pnas.1710192114 and PMC identifier 5604036.
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Abstract
Electrical transport measurements were performed on URu<sub>2 - <i>x</i></sub> Fe <sub><i>x</i></sub> Si<sub>2</sub> single-crystal specimens in high magnetic fields up to 45 T (DC fields) and 60 T (pulsed fields). We observed a systematic evolution of the critical fields for both the hidden-order (HO) and large-moment antiferromagnetic (LMAFM) phases and established the 3D phase diagram of <i>T-H-x</i> In the HO phase, <i>H</i>/<i>H</i><sub>0</sub> scales with <i>T</i>/<i>T</i><sub>0</sub> and collapses onto a single curve. However, in the LMAFM phase, this single scaling relation is not satisfied. Within a certain range of <i>x</i> values, the HO phase reenters after the LMAFM phase is suppressed by the magnetic field, similar to the behavior observed for URu<sub>2</sub>Si<sub>2</sub> within a certain range of pressures.