Giant lattice softening at a Lifshitz transition in Sr2RuO4

H. M. L. Noad; K. Ishida; Y.-S. Li; E. Gati; V. Stangier; N. Kikugawa; D. A. Sokolov; M. Nicklas; B. Kim; I. I. Mazin; M. Garst; J. Schmalian; A. P. Mackenzie; C. W. Hicks

doi:10.1126/science.adf3348

Giant lattice softening at a Lifshitz transition in Sr₂RuO₄

H. M. L. Noad^*, K. Ishida, Y.-S. Li, E. Gati, V. Stangier, N. Kikugawa, D. A. Sokolov, M. Nicklas, B. Kim, I. I. Mazin, M. Garst, J. Schmalian^*, A. P. Mackenzie^*, C. W. Hicks^*

^*Corresponding author for this work

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Abstract

The interplay of electronic and structural degrees of freedom in solids is a topic of intense research. More than 60 years ago, Lifshitz discussed a counterintuitive possibility: lattice softening driven by conduction electrons at topological Fermi surface transitions. The effect that he predicted, however, was small and has not been convincingly observed. Using a piezo-based uniaxial pressure cell to tune the ultraclean metal strontium ruthenate while measuring the stress-strain relationship, we reveal a huge softening of the Young’s modulus at a Lifshitz transition of a two-dimensional Fermi surface and show that it is indeed driven entirely by the conduction electrons of the relevant energy band.

Original language	English
Pages (from-to)	447-450
Number of pages	4
Journal	Science
Volume	382
Issue number	6669
DOIs	https://doi.org/10.1126/science.adf3348
Publication status	Published - 27 Oct 2023

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Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1126/science.adf3348.
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@article{7801b481725a4e0b9c4e26f9be0e80eb,

title = "Giant lattice softening at a Lifshitz transition in Sr2RuO4",

abstract = "The interplay of electronic and structural degrees of freedom in solids is a topic of intense research. More than 60 years ago, Lifshitz discussed a counterintuitive possibility: lattice softening driven by conduction electrons at topological Fermi surface transitions. The effect that he predicted, however, was small and has not been convincingly observed. Using a piezo-based uniaxial pressure cell to tune the ultraclean metal strontium ruthenate while measuring the stress-strain relationship, we reveal a huge softening of the Young{\textquoteright}s modulus at a Lifshitz transition of a two-dimensional Fermi surface and show that it is indeed driven entirely by the conduction electrons of the relevant energy band.",

author = "Noad, {H. M. L.} and K. Ishida and Y.-S. Li and E. Gati and V. Stangier and N. Kikugawa and Sokolov, {D. A.} and M. Nicklas and B. Kim and Mazin, {I. I.} and M. Garst and J. Schmalian and Mackenzie, {A. P.} and Hicks, {C. W.}",

note = "This work was supported by the Max Planck Society; Research in Dresden benefits from the environment provided by the DFG Cluster of Excellence (ct.qmat EXC 2147, Project 390858940 to A.P.M.); the German Research Foundation (TRR 288-422213477 ELASTO-Q-MAT, Project A10 to H.M.L.N., A.P.M., and C.W.H.; TRR 288-422213477 ELASTO-Q-MAT, Project A11 to M.G.; and TRR 288-422213477 ELASTO-Q-MAT, Project B01 to J.S. and V.S.); the Alexander von Humboldt Foundation (Research Fellowship for Postdoctoral Researchers to H.M.L.N.); received funding of the Klaus Tschira Boost Fund, a joint initiative of the German Scholars Organization and the Klaus Tschira Foundation (to H.M.L.N.); the Japan Society for the Promotion of Science (Overseas Research Fellowship to K.I. and KAKENHI Grants-in-Aid for Scientific Research grants 17H06136, 18K04715, 21H01033, and 22K19093 to N.K.; and Core-to-Core Program grant JPJSCCA20170002 to N.K.); the Japan Science and Technology Agency (JST)–Mirai Program (grant no. JPMJMI18A3 to N.K.); and the National Research Foundation of Korea (grants 2021R1C1C1007017 and 2022M3H4A1A04074153 to B.K.).",

year = "2023",

month = oct,

day = "27",

doi = "10.1126/science.adf3348",

language = "English",

volume = "382",

pages = "447--450",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6669",

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T1 - Giant lattice softening at a Lifshitz transition in Sr2RuO4

AU - Noad, H. M. L.

AU - Ishida, K.

AU - Li, Y.-S.

AU - Gati, E.

AU - Stangier, V.

AU - Kikugawa, N.

AU - Sokolov, D. A.

AU - Nicklas, M.

AU - Kim, B.

AU - Mazin, I. I.

AU - Garst, M.

AU - Schmalian, J.

AU - Mackenzie, A. P.

AU - Hicks, C. W.

N1 - This work was supported by the Max Planck Society; Research in Dresden benefits from the environment provided by the DFG Cluster of Excellence (ct.qmat EXC 2147, Project 390858940 to A.P.M.); the German Research Foundation (TRR 288-422213477 ELASTO-Q-MAT, Project A10 to H.M.L.N., A.P.M., and C.W.H.; TRR 288-422213477 ELASTO-Q-MAT, Project A11 to M.G.; and TRR 288-422213477 ELASTO-Q-MAT, Project B01 to J.S. and V.S.); the Alexander von Humboldt Foundation (Research Fellowship for Postdoctoral Researchers to H.M.L.N.); received funding of the Klaus Tschira Boost Fund, a joint initiative of the German Scholars Organization and the Klaus Tschira Foundation (to H.M.L.N.); the Japan Society for the Promotion of Science (Overseas Research Fellowship to K.I. and KAKENHI Grants-in-Aid for Scientific Research grants 17H06136, 18K04715, 21H01033, and 22K19093 to N.K.; and Core-to-Core Program grant JPJSCCA20170002 to N.K.); the Japan Science and Technology Agency (JST)–Mirai Program (grant no. JPMJMI18A3 to N.K.); and the National Research Foundation of Korea (grants 2021R1C1C1007017 and 2022M3H4A1A04074153 to B.K.).

PY - 2023/10/27

Y1 - 2023/10/27

N2 - The interplay of electronic and structural degrees of freedom in solids is a topic of intense research. More than 60 years ago, Lifshitz discussed a counterintuitive possibility: lattice softening driven by conduction electrons at topological Fermi surface transitions. The effect that he predicted, however, was small and has not been convincingly observed. Using a piezo-based uniaxial pressure cell to tune the ultraclean metal strontium ruthenate while measuring the stress-strain relationship, we reveal a huge softening of the Young’s modulus at a Lifshitz transition of a two-dimensional Fermi surface and show that it is indeed driven entirely by the conduction electrons of the relevant energy band.

AB - The interplay of electronic and structural degrees of freedom in solids is a topic of intense research. More than 60 years ago, Lifshitz discussed a counterintuitive possibility: lattice softening driven by conduction electrons at topological Fermi surface transitions. The effect that he predicted, however, was small and has not been convincingly observed. Using a piezo-based uniaxial pressure cell to tune the ultraclean metal strontium ruthenate while measuring the stress-strain relationship, we reveal a huge softening of the Young’s modulus at a Lifshitz transition of a two-dimensional Fermi surface and show that it is indeed driven entirely by the conduction electrons of the relevant energy band.

U2 - 10.1126/science.adf3348

DO - 10.1126/science.adf3348

M3 - Article

SN - 0036-8075

VL - 382

SP - 447

EP - 450

JO - Science

JF - Science

IS - 6669

ER -

Giant lattice softening at a Lifshitz transition in Sr2RuO4

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Giant lattice softening at a Lifshitz transition in Sr₂RuO₄