Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor

Chun Lin; Armando Consiglio; Ola Kenji Forslund; Julia Küspert; M. Michael Denner; Hechang Lei; Alex Louat; Matthew D. Watson; Timur K. Kim; Cephise Cacho; Dina Carbone; Mats Leandersson; Craig Polley; Thiagarajan Balasubramanian; Domenico Di Sante; Ronny Thomale; Zurab Guguchia; Giorgio Sangiovanni; Titus Neupert; Johan Chang

doi:10.1038/s41467-024-53737-w

Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor

Chun Lin, Armando Consiglio, Ola Kenji Forslund, Julia Küspert, M. Michael Denner, Hechang Lei, Alex Louat, Matthew D. Watson, Timur K. Kim, Cephise Cacho, Dina Carbone, Mats Leandersson, Craig Polley, Thiagarajan Balasubramanian, Domenico Di Sante, Ronny Thomale, Zurab Guguchia, Giorgio Sangiovanni, Titus Neupert, Johan Chang

Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

Sammanfattning

Tunable quantum materials hold great potential for applications. Of special interest are materials in which small lattice strain induces giant electronic responses. The kagome compounds AV₃Sb₅ (A = K, Rb, Cs) provide a testbed for electronic tunable states. In this study, through angle-resolved photoemission spectroscopy, we provide comprehensive spectroscopic measurements of the electronic responses induced by compressive and tensile strains on the charge-density-wave (CDW) and van Hove singularity (VHS) in CsV₃Sb₅. We observe a tripling of the CDW gap magnitudes with ~ 1% strain. Simultaneously, changes of both energy and mass of the VHS are observed. Combined, this reveals an anticorrelation between the unconventional CDW order parameter and the mass of the VHS, and highlight the role of the latter in the superconducting pairing. The substantial electronic responses uncover a rich strain tunability of the versatile kagome system in studying quantum interplays under lattice variations.

Originalspråk	engelska
Artikelnummer	10466
Tidskrift	Nature Communications
Volym	15
Nummer	1
DOI	https://doi.org/10.1038/s41467-024-53737-w
Status	Published - 2024 dec.

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Den kondenserade materiens fysik (Här ingår: Materialfysik, nanofysik)

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10.1038/s41467-024-53737-w

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Lin, C., Consiglio, A., Forslund, O. K., Küspert, J., Denner, M. M., Lei, H., Louat, A., Watson, M. D., Kim, T. K., Cacho, C., Carbone, D., Leandersson, M., Polley, C., Balasubramanian, T., Sante, D. D., Thomale, R., Guguchia, Z., Sangiovanni, G., Neupert, T., & Chang, J. (2024). Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor. Nature Communications, 15(1), Artikel 10466. https://doi.org/10.1038/s41467-024-53737-w

@article{afab223889ed4611beea3fcb47e5ea23,

title = "Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor",

abstract = "Tunable quantum materials hold great potential for applications. Of special interest are materials in which small lattice strain induces giant electronic responses. The kagome compounds AV3Sb5 (A = K, Rb, Cs) provide a testbed for electronic tunable states. In this study, through angle-resolved photoemission spectroscopy, we provide comprehensive spectroscopic measurements of the electronic responses induced by compressive and tensile strains on the charge-density-wave (CDW) and van Hove singularity (VHS) in CsV3Sb5. We observe a tripling of the CDW gap magnitudes with ~ 1% strain. Simultaneously, changes of both energy and mass of the VHS are observed. Combined, this reveals an anticorrelation between the unconventional CDW order parameter and the mass of the VHS, and highlight the role of the latter in the superconducting pairing. The substantial electronic responses uncover a rich strain tunability of the versatile kagome system in studying quantum interplays under lattice variations.",

author = "Chun Lin and Armando Consiglio and Forslund, {Ola Kenji} and Julia K{\"u}spert and Denner, {M. Michael} and Hechang Lei and Alex Louat and Watson, {Matthew D.} and Kim, {Timur K.} and Cephise Cacho and Dina Carbone and Mats Leandersson and Craig Polley and Thiagarajan Balasubramanian and Sante, {Domenico Di} and Ronny Thomale and Zurab Guguchia and Giorgio Sangiovanni and Titus Neupert and Johan Chang",

year = "2024",

month = dec,

doi = "10.1038/s41467-024-53737-w",

language = "English",

volume = "15",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

number = "1",

}

Lin, C, Consiglio, A, Forslund, OK, Küspert, J, Denner, MM, Lei, H, Louat, A, Watson, MD, Kim, TK, Cacho, C, Carbone, D, Leandersson, M, Polley, C, Balasubramanian, T, Sante, DD, Thomale, R, Guguchia, Z, Sangiovanni, G, Neupert, T & Chang, J 2024, 'Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor', Nature Communications, vol. 15, nr. 1, 10466. https://doi.org/10.1038/s41467-024-53737-w

TY - JOUR

T1 - Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor

AU - Lin, Chun

AU - Consiglio, Armando

AU - Forslund, Ola Kenji

AU - Küspert, Julia

AU - Denner, M. Michael

AU - Lei, Hechang

AU - Louat, Alex

AU - Watson, Matthew D.

AU - Kim, Timur K.

AU - Cacho, Cephise

AU - Carbone, Dina

AU - Leandersson, Mats

AU - Polley, Craig

AU - Balasubramanian, Thiagarajan

AU - Sante, Domenico Di

AU - Thomale, Ronny

AU - Guguchia, Zurab

AU - Sangiovanni, Giorgio

AU - Neupert, Titus

AU - Chang, Johan

PY - 2024/12

Y1 - 2024/12

N2 - Tunable quantum materials hold great potential for applications. Of special interest are materials in which small lattice strain induces giant electronic responses. The kagome compounds AV3Sb5 (A = K, Rb, Cs) provide a testbed for electronic tunable states. In this study, through angle-resolved photoemission spectroscopy, we provide comprehensive spectroscopic measurements of the electronic responses induced by compressive and tensile strains on the charge-density-wave (CDW) and van Hove singularity (VHS) in CsV3Sb5. We observe a tripling of the CDW gap magnitudes with ~ 1% strain. Simultaneously, changes of both energy and mass of the VHS are observed. Combined, this reveals an anticorrelation between the unconventional CDW order parameter and the mass of the VHS, and highlight the role of the latter in the superconducting pairing. The substantial electronic responses uncover a rich strain tunability of the versatile kagome system in studying quantum interplays under lattice variations.

AB - Tunable quantum materials hold great potential for applications. Of special interest are materials in which small lattice strain induces giant electronic responses. The kagome compounds AV3Sb5 (A = K, Rb, Cs) provide a testbed for electronic tunable states. In this study, through angle-resolved photoemission spectroscopy, we provide comprehensive spectroscopic measurements of the electronic responses induced by compressive and tensile strains on the charge-density-wave (CDW) and van Hove singularity (VHS) in CsV3Sb5. We observe a tripling of the CDW gap magnitudes with ~ 1% strain. Simultaneously, changes of both energy and mass of the VHS are observed. Combined, this reveals an anticorrelation between the unconventional CDW order parameter and the mass of the VHS, and highlight the role of the latter in the superconducting pairing. The substantial electronic responses uncover a rich strain tunability of the versatile kagome system in studying quantum interplays under lattice variations.

U2 - 10.1038/s41467-024-53737-w

DO - 10.1038/s41467-024-53737-w

M3 - Article

C2 - 39622808

AN - SCOPUS:85211224113

SN - 2041-1723

VL - 15

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 10466

ER -

Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor

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