Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x}
Non-Fermi liquids are strange metals whose physical properties deviate qualitatively from those of conventional metals due to strong quantum fluctuations. In this paper, we report transport measurements on the FeSe_{1−x}S_{x} superconductor, which has a quantum critical point of a nematic order with...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-09-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033367 |
| _version_ | 1797211279148974080 |
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| author | W. K. Huang S. Hosoi M. Čulo S. Kasahara Y. Sato K. Matsuura Y. Mizukami M. Berben N. E. Hussey H. Kontani T. Shibauchi Y. Matsuda |
| author_facet | W. K. Huang S. Hosoi M. Čulo S. Kasahara Y. Sato K. Matsuura Y. Mizukami M. Berben N. E. Hussey H. Kontani T. Shibauchi Y. Matsuda |
| author_sort | W. K. Huang |
| collection | DOAJ |
| description | Non-Fermi liquids are strange metals whose physical properties deviate qualitatively from those of conventional metals due to strong quantum fluctuations. In this paper, we report transport measurements on the FeSe_{1−x}S_{x} superconductor, which has a quantum critical point of a nematic order without accompanying antiferromagnetism. We find that in addition to a linear-in-temperature resistivity ρ_{xx}∝T, which is close to the Planckian limit, the Hall angle varies as cotθ_{H}∝T^{2} and the low-field magnetoresistance is well scaled as Δρ_{xx}/ρ_{xx}∝tan^{2}θ_{H} in the vicinity of the nematic quantum critical point. This set of anomalous charge transport properties show striking resemblance with those reported in cuprate, iron-pnictide, and heavy fermion superconductors, demonstrating that the critical fluctuations of a nematic order with q≈0 can also lead to a breakdown of the Fermi liquid description. |
| first_indexed | 2024-04-24T10:23:58Z |
| format | Article |
| id | doaj.art-96bd7c3804fa44cc88f8a1d415916be5 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:23:58Z |
| publishDate | 2020-09-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-96bd7c3804fa44cc88f8a1d415916be52024-04-12T17:00:08ZengAmerican Physical SocietyPhysical Review Research2643-15642020-09-012303336710.1103/PhysRevResearch.2.033367Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x}W. K. HuangS. HosoiM. ČuloS. KasaharaY. SatoK. MatsuuraY. MizukamiM. BerbenN. E. HusseyH. KontaniT. ShibauchiY. MatsudaNon-Fermi liquids are strange metals whose physical properties deviate qualitatively from those of conventional metals due to strong quantum fluctuations. In this paper, we report transport measurements on the FeSe_{1−x}S_{x} superconductor, which has a quantum critical point of a nematic order without accompanying antiferromagnetism. We find that in addition to a linear-in-temperature resistivity ρ_{xx}∝T, which is close to the Planckian limit, the Hall angle varies as cotθ_{H}∝T^{2} and the low-field magnetoresistance is well scaled as Δρ_{xx}/ρ_{xx}∝tan^{2}θ_{H} in the vicinity of the nematic quantum critical point. This set of anomalous charge transport properties show striking resemblance with those reported in cuprate, iron-pnictide, and heavy fermion superconductors, demonstrating that the critical fluctuations of a nematic order with q≈0 can also lead to a breakdown of the Fermi liquid description.http://doi.org/10.1103/PhysRevResearch.2.033367 |
| spellingShingle | W. K. Huang S. Hosoi M. Čulo S. Kasahara Y. Sato K. Matsuura Y. Mizukami M. Berben N. E. Hussey H. Kontani T. Shibauchi Y. Matsuda Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x} Physical Review Research |
| title | Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x} |
| title_full | Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x} |
| title_fullStr | Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x} |
| title_full_unstemmed | Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x} |
| title_short | Non-Fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting FeSe_{1−x}S_{x} |
| title_sort | non fermi liquid transport in the vicinity of the nematic quantum critical point of superconducting fese 1 x s x |
| url | http://doi.org/10.1103/PhysRevResearch.2.033367 |
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