Truncated mass divergence in a Mott metal

Konstantin Semeniuk, Hui Chang, Jordan Baglo, Sven Friedemann, Stanley w. Tozer, William a. Coniglio, M. B. Gamza, Pascal Reiss, Patricia Alireza, Inge Leermakers, A. McCollam, Audrey d. Grockowiak, F M Grosche*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)

Abstract

Strong repulsive interactions in metals can cause electronic grid-lock, producing a Mott insulator. The strongly correlated metallic state on the brink of such Mott localization is associated with some of the most challenging emergent phenomena in condensed matter research. This study tracks the electronic charge carrier concentration and velocity in a clean three-dimensional material tuned toward the Mott insulating state by applied pressure. Our results show that carriers slow down dramatically as the Mott transition is approached, confirming experimentally the Brinkman–Rice description of the correlated Mott metal, first articulated more than fifty years ago. These findings inform the study of more complex materials such as cuprate, organic, and iron-based superconductors, Moiré superlattice systems, and Kondo lattice materials.
Original languageEnglish
Article numbere2301456120
JournalProceedings of the National Academy of Sciences
Volume120
Issue number38
DOIs
Publication statusPublished - 11 Sept 2023

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS. We thank, in particular, A. Chubukov, G. Lonzarich, and M. Sutherland for helpful discussions. The work was supported by the Engineering and Physical Sciences Research Council (EPSRC) of the UK (grants no. EP/K012894 and EP/P023290/1) and by Trinity College. Portions of this work were performed at the National High Magnetic Field Laboratory, which is supported by the NSF Cooperative Agreement No. DMR-1157490 and DMR-1644779 and the State of Florida, and at HFML-RU/NWO-I a part of the European Magnetic Field Laboratory (EMFL), which is supported by the EPSRC of the UK via its membership to the EMFL (grant no. EP/N01085X/1). S.F. acknowledges the support by the ERC under 715262-HPSuper.

Publisher Copyright:
© 2023 National Academy of Sciences. All rights reserved.

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