Magnetic states of the Kondo lattice Ce$_2$PdSi$_3$ and their pressure evolution
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2026
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| author | Zhang, Yanan Shan, Zhaoyang Zhang, Jiawen Ye, Kaixin Li, Yongjian Su, Dajun Manuel, Pascal Khalyavin, Dmitry Adroja, Devashibhai Mayoh, Daniel Balakrishnan, Geetha Liu, Yu Smidman, Michael Yuan, Huiqiu |
| author_facet | Zhang, Yanan Shan, Zhaoyang Zhang, Jiawen Ye, Kaixin Li, Yongjian Su, Dajun Manuel, Pascal Khalyavin, Dmitry Adroja, Devashibhai Mayoh, Daniel Balakrishnan, Geetha Liu, Yu Smidman, Michael Yuan, Huiqiu |
| contents | Frustrated Kondo lattices are ideal platforms for exploring unconventional forms of quantum criticality, as well as magnetism and other emergent phases. Here we report the magnetic properties of the candidate frustrated heavy fermion compound Ce$_2$PdSi$_3$, and map their evolution upon applying magnetic fields and hydrostatic pressure. We find that at ambient pressure Ce$_2$PdSi$_3$ exhibits two distinct magnetic phase transitions, a ferromagnetic-like transition at $T_{\mathrm{M1}}=3.8$ K and an incommensurate antiferromagnetic transition at $T_{\mathrm{M2}}=2.9$ K. Upon applying pressure, $T_{\mathrm{M1}}$ is continuously suppressed and becomes undetectable above 4.2 GPa, whereas $T_{\mathrm{M2}}$ increases and remains robust up to at least 7.5 GPa. The observed pressure evolution of magnetic order in Ce$_2$PdSi$_3$ suggests the presence of competing magnetic orders, and cannot be simply encapsulated by the Doniach phase diagram, motivating further investigations for its origin, including discerning the role of geometric frustration. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_20517 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Magnetic states of the Kondo lattice Ce$_2$PdSi$_3$ and their pressure evolution Zhang, Yanan Shan, Zhaoyang Zhang, Jiawen Ye, Kaixin Li, Yongjian Su, Dajun Manuel, Pascal Khalyavin, Dmitry Adroja, Devashibhai Mayoh, Daniel Balakrishnan, Geetha Liu, Yu Smidman, Michael Yuan, Huiqiu Strongly Correlated Electrons Frustrated Kondo lattices are ideal platforms for exploring unconventional forms of quantum criticality, as well as magnetism and other emergent phases. Here we report the magnetic properties of the candidate frustrated heavy fermion compound Ce$_2$PdSi$_3$, and map their evolution upon applying magnetic fields and hydrostatic pressure. We find that at ambient pressure Ce$_2$PdSi$_3$ exhibits two distinct magnetic phase transitions, a ferromagnetic-like transition at $T_{\mathrm{M1}}=3.8$ K and an incommensurate antiferromagnetic transition at $T_{\mathrm{M2}}=2.9$ K. Upon applying pressure, $T_{\mathrm{M1}}$ is continuously suppressed and becomes undetectable above 4.2 GPa, whereas $T_{\mathrm{M2}}$ increases and remains robust up to at least 7.5 GPa. The observed pressure evolution of magnetic order in Ce$_2$PdSi$_3$ suggests the presence of competing magnetic orders, and cannot be simply encapsulated by the Doniach phase diagram, motivating further investigations for its origin, including discerning the role of geometric frustration. |
| title | Magnetic states of the Kondo lattice Ce$_2$PdSi$_3$ and their pressure evolution |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2601.20517 |