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The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5)

The mysterious Planckian metal state, showing perfect T-linear resistivity associated with universal scattering rate, 1/τ = αk(B)T/ℏ with α ~ 1, has been observed in the normal state of various strongly correlated superconductors close to a quantum critical point. However, its microscopic origin and...

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Autores principales: Chang, Yung-Yeh, Lei, Hechang, Petrovic, C., Chung, Chung-Hou
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9898561/
https://www.ncbi.nlm.nih.gov/pubmed/36737608
http://dx.doi.org/10.1038/s41467-023-36194-9
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author Chang, Yung-Yeh
Lei, Hechang
Petrovic, C.
Chung, Chung-Hou
author_facet Chang, Yung-Yeh
Lei, Hechang
Petrovic, C.
Chung, Chung-Hou
author_sort Chang, Yung-Yeh
collection PubMed
description The mysterious Planckian metal state, showing perfect T-linear resistivity associated with universal scattering rate, 1/τ = αk(B)T/ℏ with α ~ 1, has been observed in the normal state of various strongly correlated superconductors close to a quantum critical point. However, its microscopic origin and link to quantum criticality remains an outstanding open problem. Here, we observe quantum-critical T/B-scaling of the Planckian metal state in resistivity and heat capacity of heavy-electron superconductor Ce(1−x)Nd(x)CoIn(5) in magnetic fields near the edge of antiferromagnetism at the critical doping x(c) ~ 0.03. We present clear experimental evidences of Kondo hybridization being quantum critical at x(c). We provide a generic microscopic mechanism to qualitatively account for this quantum critical Planckian state within the quasi-two dimensional Kondo-Heisenberg lattice model near Kondo breakdown transition. We find α is a non-universal constant and depends inversely on the square of Kondo hybridization strength.
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spelling pubmed-98985612023-02-05 The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5) Chang, Yung-Yeh Lei, Hechang Petrovic, C. Chung, Chung-Hou Nat Commun Article The mysterious Planckian metal state, showing perfect T-linear resistivity associated with universal scattering rate, 1/τ = αk(B)T/ℏ with α ~ 1, has been observed in the normal state of various strongly correlated superconductors close to a quantum critical point. However, its microscopic origin and link to quantum criticality remains an outstanding open problem. Here, we observe quantum-critical T/B-scaling of the Planckian metal state in resistivity and heat capacity of heavy-electron superconductor Ce(1−x)Nd(x)CoIn(5) in magnetic fields near the edge of antiferromagnetism at the critical doping x(c) ~ 0.03. We present clear experimental evidences of Kondo hybridization being quantum critical at x(c). We provide a generic microscopic mechanism to qualitatively account for this quantum critical Planckian state within the quasi-two dimensional Kondo-Heisenberg lattice model near Kondo breakdown transition. We find α is a non-universal constant and depends inversely on the square of Kondo hybridization strength. Nature Publishing Group UK 2023-02-03 /pmc/articles/PMC9898561/ /pubmed/36737608 http://dx.doi.org/10.1038/s41467-023-36194-9 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Chang, Yung-Yeh
Lei, Hechang
Petrovic, C.
Chung, Chung-Hou
The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5)
title The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5)
title_full The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5)
title_fullStr The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5)
title_full_unstemmed The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5)
title_short The scaled-invariant Planckian metal and quantum criticality in Ce(1−x)Nd(x)CoIn(5)
title_sort scaled-invariant planckian metal and quantum criticality in ce(1−x)nd(x)coin(5)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9898561/
https://www.ncbi.nlm.nih.gov/pubmed/36737608
http://dx.doi.org/10.1038/s41467-023-36194-9
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