Electronic response of a Mott insulator at a current-induced insulator-to-metal transition

C. T. Suen; I. Marković; M. Zonno; N. Heinsdorf; S. Zhdanovich; N. H. Jo; M. Schmid; P. Hansmann; P. Puphal; K. Fürsich; S. Smit; C. Au-Yeung; V. Zimmermann; B. Zwartsenberg; M. Krautloher; I. S. Elfimov; R. Koch; S. Gorovikov; C. Jozwiak; A. Bostwick; M. Franz; Eli Rotenberg; B. Keimer; A. Damascelli

doi:10.1038/s41567-024-02629-3

Electronic response of a Mott insulator at a current-induced insulator-to-metal transition

C. T. Suen^*, I. Marković, M. Zonno, N. Heinsdorf, S. Zhdanovich, N. H. Jo, M. Schmid, P. Hansmann, P. Puphal, K. Fürsich, S. Smit, C. Au-Yeung, V. Zimmermann, B. Zwartsenberg, M. Krautloher, I. S. Elfimov, R. Koch, S. Gorovikov, C. Jozwiak, A. BostwickM. Franz, Eli Rotenberg, B. Keimer^*, A. Damascelli^*

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

7 Downloads (Pure)

Abstract

The Mott insulator Ca₂RuO₄ exhibits an insulator-to-metal transition induced by d.c. current. Despite the thorough examination of the structural changes associated with this transition, a comprehensive knowledge of the response of electronic degrees of freedom is still lacking. Here we demonstrate current-induced modifications of the electronic states of Ca₂RuO₄. Angle-resolved photoemission spectroscopy in conjunction with four-probe electrical transport (transport-ARPES) measurements reveal a clear reduction of the Mott gap and a modification in the dispersion of the Ru bands. Based on a free-energy analysis, we show that the current-induced phase is electronically distinct from the high-temperature zero-current metallic phase. Our results highlight strong interplay of lattice- and orbital-dependent electronic responses in the current-driven insulator-to-metal transition.

Original language	English
Journal	Nature Physics
Early online date	24 Sept 2024
DOIs	https://doi.org/10.1038/s41567-024-02629-3
Publication status	E-pub ahead of print - 24 Sept 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1038/s41567-024-02629-3Licence: Creative Commons: Attribution (CC BY)

SuenC2024ElectronicFinal published version, 1.8 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

Suen, C. T., Marković, I., Zonno, M., Heinsdorf, N., Zhdanovich, S., Jo, N. H., Schmid, M., Hansmann, P., Puphal, P., Fürsich, K., Smit, S., Au-Yeung, C., Zimmermann, V., Zwartsenberg, B., Krautloher, M., Elfimov, I. S., Koch, R., Gorovikov, S., Jozwiak, C., ... Damascelli, A. (2024). Electronic response of a Mott insulator at a current-induced insulator-to-metal transition. Nature Physics. Advance online publication. https://doi.org/10.1038/s41567-024-02629-3

@article{a58df545d423450ab56e24657336c247,

title = "Electronic response of a Mott insulator at a current-induced insulator-to-metal transition",

abstract = "The Mott insulator Ca2RuO4 exhibits an insulator-to-metal transition induced by d.c. current. Despite the thorough examination of the structural changes associated with this transition, a comprehensive knowledge of the response of electronic degrees of freedom is still lacking. Here we demonstrate current-induced modifications of the electronic states of Ca2RuO4. Angle-resolved photoemission spectroscopy in conjunction with four-probe electrical transport (transport-ARPES) measurements reveal a clear reduction of the Mott gap and a modification in the dispersion of the Ru bands. Based on a free-energy analysis, we show that the current-induced phase is electronically distinct from the high-temperature zero-current metallic phase. Our results highlight strong interplay of lattice- and orbital-dependent electronic responses in the current-driven insulator-to-metal transition.",

author = "Suen, {C. T.} and I. Markovi{\'c} and M. Zonno and N. Heinsdorf and S. Zhdanovich and Jo, {N. H.} and M. Schmid and P. Hansmann and P. Puphal and K. F{\"u}rsich and S. Smit and C. Au-Yeung and V. Zimmermann and B. Zwartsenberg and M. Krautloher and Elfimov, {I. S.} and R. Koch and S. Gorovikov and C. Jozwiak and A. Bostwick and M. Franz and Eli Rotenberg and B. Keimer and A. Damascelli",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = sep,

day = "24",

doi = "10.1038/s41567-024-02629-3",

language = "English",

journal = "Nature Physics",

issn = "1745-2473",

publisher = "Nature Publishing Group",

}

Suen, CT, Marković, I, Zonno, M, Heinsdorf, N, Zhdanovich, S, Jo, NH, Schmid, M, Hansmann, P, Puphal, P, Fürsich, K, Smit, S, Au-Yeung, C, Zimmermann, V, Zwartsenberg, B, Krautloher, M, Elfimov, IS, Koch, R, Gorovikov, S, Jozwiak, C, Bostwick, A, Franz, M, Rotenberg, E, Keimer, B & Damascelli, A 2024, 'Electronic response of a Mott insulator at a current-induced insulator-to-metal transition', Nature Physics. https://doi.org/10.1038/s41567-024-02629-3

TY - JOUR

T1 - Electronic response of a Mott insulator at a current-induced insulator-to-metal transition

AU - Suen, C. T.

AU - Marković, I.

AU - Zonno, M.

AU - Heinsdorf, N.

AU - Zhdanovich, S.

AU - Jo, N. H.

AU - Schmid, M.

AU - Hansmann, P.

AU - Puphal, P.

AU - Fürsich, K.

AU - Smit, S.

AU - Au-Yeung, C.

AU - Zimmermann, V.

AU - Zwartsenberg, B.

AU - Krautloher, M.

AU - Elfimov, I. S.

AU - Koch, R.

AU - Gorovikov, S.

AU - Jozwiak, C.

AU - Bostwick, A.

AU - Franz, M.

AU - Rotenberg, Eli

AU - Keimer, B.

AU - Damascelli, A.

PY - 2024/9/24

Y1 - 2024/9/24

N2 - The Mott insulator Ca2RuO4 exhibits an insulator-to-metal transition induced by d.c. current. Despite the thorough examination of the structural changes associated with this transition, a comprehensive knowledge of the response of electronic degrees of freedom is still lacking. Here we demonstrate current-induced modifications of the electronic states of Ca2RuO4. Angle-resolved photoemission spectroscopy in conjunction with four-probe electrical transport (transport-ARPES) measurements reveal a clear reduction of the Mott gap and a modification in the dispersion of the Ru bands. Based on a free-energy analysis, we show that the current-induced phase is electronically distinct from the high-temperature zero-current metallic phase. Our results highlight strong interplay of lattice- and orbital-dependent electronic responses in the current-driven insulator-to-metal transition.

AB - The Mott insulator Ca2RuO4 exhibits an insulator-to-metal transition induced by d.c. current. Despite the thorough examination of the structural changes associated with this transition, a comprehensive knowledge of the response of electronic degrees of freedom is still lacking. Here we demonstrate current-induced modifications of the electronic states of Ca2RuO4. Angle-resolved photoemission spectroscopy in conjunction with four-probe electrical transport (transport-ARPES) measurements reveal a clear reduction of the Mott gap and a modification in the dispersion of the Ru bands. Based on a free-energy analysis, we show that the current-induced phase is electronically distinct from the high-temperature zero-current metallic phase. Our results highlight strong interplay of lattice- and orbital-dependent electronic responses in the current-driven insulator-to-metal transition.

UR - http://www.scopus.com/inward/record.url?scp=85204677102&partnerID=8YFLogxK

U2 - 10.1038/s41567-024-02629-3

DO - 10.1038/s41567-024-02629-3

M3 - Article

AN - SCOPUS:85204677102

SN - 1745-2473

JO - Nature Physics

JF - Nature Physics

ER -