Evidence of a Kondo lattice quantum critical point and of non-Fermi liquid behavior in the intercalated layered system V$_{5}$S$_{8}$
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910570300571648 |
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| author | Yang, Hancheng Moutaabbid, Hicham Baptiste, Benoît Hrabovsky, David Gauzzi, Andrea Klein, Yannick |
| author_facet | Yang, Hancheng Moutaabbid, Hicham Baptiste, Benoît Hrabovsky, David Gauzzi, Andrea Klein, Yannick |
| contents | By means of a specific heat, susceptibility and high-pressure electrical resistivity study, we show that the local magnetic moments of the intercalated V ions in V$_{5}$S$_{8}$ realize a prototype of Kondo lattice system, where an antiferromagnetic order of the moments coexists with a Fermi liquid in the VS$_{2}$ layers with intermediate heavy Fermion properties. The antiferromagnetic order and the Fermi-liquid behavior are simultaneously suppressed at a critical pressure, $P_c =10$ GPa, signature of a quantum critical point, which supports a Kondo lattice scenario and raises the question whether, in the paramagnetic phase at higher pressures, the heavy quasiparticles survive or form a non-Fermi liquid phase governed by the Kondo interaction. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_09956 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Evidence of a Kondo lattice quantum critical point and of non-Fermi liquid behavior in the intercalated layered system V$_{5}$S$_{8}$ Yang, Hancheng Moutaabbid, Hicham Baptiste, Benoît Hrabovsky, David Gauzzi, Andrea Klein, Yannick Strongly Correlated Electrons By means of a specific heat, susceptibility and high-pressure electrical resistivity study, we show that the local magnetic moments of the intercalated V ions in V$_{5}$S$_{8}$ realize a prototype of Kondo lattice system, where an antiferromagnetic order of the moments coexists with a Fermi liquid in the VS$_{2}$ layers with intermediate heavy Fermion properties. The antiferromagnetic order and the Fermi-liquid behavior are simultaneously suppressed at a critical pressure, $P_c =10$ GPa, signature of a quantum critical point, which supports a Kondo lattice scenario and raises the question whether, in the paramagnetic phase at higher pressures, the heavy quasiparticles survive or form a non-Fermi liquid phase governed by the Kondo interaction. |
| title | Evidence of a Kondo lattice quantum critical point and of non-Fermi liquid behavior in the intercalated layered system V$_{5}$S$_{8}$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2408.09956 |