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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.15261 |
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| _version_ | 1866916447500894208 |
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| author | Zhang, Fang Feng, Tao Ruan, Yurong Ye, Xiaoyuan Wen, Bing Zhou, Liang He, Minglin Zhuang, Zhaotong Wu, Liusuo He, Hongtao Sun, Peijie Yu, Zhiyang Liu, Weishu Zhang, Wenqing |
| author_facet | Zhang, Fang Feng, Tao Ruan, Yurong Ye, Xiaoyuan Wen, Bing Zhou, Liang He, Minglin Zhuang, Zhaotong Wu, Liusuo He, Hongtao Sun, Peijie Yu, Zhiyang Liu, Weishu Zhang, Wenqing |
| contents | Magnetic frustration has been recognized as pivotal to investigating new phases of matter in correlation-driven Kondo breakdown quantum phase transitions that are not clearly associated with broken symmetry. The nature of these new phases, however, remains underexplored. Here, we report quantum criticalities emerging from a cluster spin-glass in the heavy-fermion metal TiFe$_x$Cu$_{2x-1}$Sb, where frustration originates from intrinsic disorder. Specific heat and magnetic Grüneisen parameter measurements under varying magnetic fields exhibit quantum critical scaling, indicating a quantum critical point near 0.13 Tesla. As the magnetic field increases, the cluster spin-glass phase is progressively suppressed. Upon crossing the quantum critical point, resistivity and Hall effect measurements reveal enhanced screening of local moments and an expanding Fermi surface, consistent with the Kondo breakdown scenario. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_15261 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Emerging quantum critical phase in a cluster spin-glass Zhang, Fang Feng, Tao Ruan, Yurong Ye, Xiaoyuan Wen, Bing Zhou, Liang He, Minglin Zhuang, Zhaotong Wu, Liusuo He, Hongtao Sun, Peijie Yu, Zhiyang Liu, Weishu Zhang, Wenqing Strongly Correlated Electrons Disordered Systems and Neural Networks Materials Science Magnetic frustration has been recognized as pivotal to investigating new phases of matter in correlation-driven Kondo breakdown quantum phase transitions that are not clearly associated with broken symmetry. The nature of these new phases, however, remains underexplored. Here, we report quantum criticalities emerging from a cluster spin-glass in the heavy-fermion metal TiFe$_x$Cu$_{2x-1}$Sb, where frustration originates from intrinsic disorder. Specific heat and magnetic Grüneisen parameter measurements under varying magnetic fields exhibit quantum critical scaling, indicating a quantum critical point near 0.13 Tesla. As the magnetic field increases, the cluster spin-glass phase is progressively suppressed. Upon crossing the quantum critical point, resistivity and Hall effect measurements reveal enhanced screening of local moments and an expanding Fermi surface, consistent with the Kondo breakdown scenario. |
| title | Emerging quantum critical phase in a cluster spin-glass |
| topic | Strongly Correlated Electrons Disordered Systems and Neural Networks Materials Science |
| url | https://arxiv.org/abs/2410.15261 |