Magnetic field and pressure tuning of the heavy fermion antiferromagnet CePdIn
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911510814523392 |
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| author | Shen, Bin Du, Feng Li, Rui Su, Hang Shimura, Yasuyuki Onimaru, Takahiro Umeo, Kazunori Lu, Xin Takabatake, Toshiro Smidman, Michael Yuan, Huiqiu |
| author_facet | Shen, Bin Du, Feng Li, Rui Su, Hang Shimura, Yasuyuki Onimaru, Takahiro Umeo, Kazunori Lu, Xin Takabatake, Toshiro Smidman, Michael Yuan, Huiqiu |
| contents | Frustrated Kondo lattices are ideal platforms for studying how both the Kondo effect and quantum fluctuations compete with the magnetic exchange interactions that drive magnetic ordering. Here, we investigate the effect of tuning the heavy-fermion compound CePdIn, which crystallizes in the geometrically frustrated ZrNiAl-type structure, using applied magnetic fields and hydrostatic pressure. At ambient pressure, CePdIn exhibits two magnetic transitions, one at $T_{\rm{N}} \approx 1.65$ K and another at $T_{\rm{M}} \approx 1.15$ K, which are both suppressed by applied $c$-axis fields. Upon applying pressure in zero magnetic field, there is a non-monotonic evolution of $T_{\rm{N}}$, which decreases to 0.8 K at 2.3 GPa, before abruptly increasing to 1.5 K at 2.6 GPa. At higher pressures, $T_{\rm{N}}$ has a weak pressure dependence, and vanishes near 5 GPa. Together with the high-pressure phase being more robust to applied fields, these results suggest two distinct antiferromagnetic phases in CePdIn, which are separated near 2.6 GPa, and this change may be driven by the evolution of the underlying electronic structure due to enhanced Kondo hybridization under pressure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_22528 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetic field and pressure tuning of the heavy fermion antiferromagnet CePdIn Shen, Bin Du, Feng Li, Rui Su, Hang Shimura, Yasuyuki Onimaru, Takahiro Umeo, Kazunori Lu, Xin Takabatake, Toshiro Smidman, Michael Yuan, Huiqiu Strongly Correlated Electrons Materials Science Frustrated Kondo lattices are ideal platforms for studying how both the Kondo effect and quantum fluctuations compete with the magnetic exchange interactions that drive magnetic ordering. Here, we investigate the effect of tuning the heavy-fermion compound CePdIn, which crystallizes in the geometrically frustrated ZrNiAl-type structure, using applied magnetic fields and hydrostatic pressure. At ambient pressure, CePdIn exhibits two magnetic transitions, one at $T_{\rm{N}} \approx 1.65$ K and another at $T_{\rm{M}} \approx 1.15$ K, which are both suppressed by applied $c$-axis fields. Upon applying pressure in zero magnetic field, there is a non-monotonic evolution of $T_{\rm{N}}$, which decreases to 0.8 K at 2.3 GPa, before abruptly increasing to 1.5 K at 2.6 GPa. At higher pressures, $T_{\rm{N}}$ has a weak pressure dependence, and vanishes near 5 GPa. Together with the high-pressure phase being more robust to applied fields, these results suggest two distinct antiferromagnetic phases in CePdIn, which are separated near 2.6 GPa, and this change may be driven by the evolution of the underlying electronic structure due to enhanced Kondo hybridization under pressure. |
| title | Magnetic field and pressure tuning of the heavy fermion antiferromagnet CePdIn |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2512.22528 |