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Spin-orbit coupling induced Van Hove singularity in proximity to a Lifshitz transition in Sr4Ru3O10

Marques, Carolina A. ; Murgatroyd, Philip A.E. ; Fittipaldi, Rosalba ; Osmolska, Weronika ; Edwards, Brendan ; Benedičič, Izidor ; Siemann, Gesa R. ; Rhodes, Luke C. ; Buchberger, Sebastian and Naritsuka, Masahiro , et al. (2024) In npj Quantum Materials 9(1).
Abstract

Van Hove singularities (VHss) in the vicinity of the Fermi energy often play a dramatic role in the physics of strongly correlated electron materials. The divergence of the density of states generated by VHss can trigger the emergence of phases such as superconductivity, ferromagnetism, metamagnetism, and density wave orders. A detailed understanding of the electronic structure of these VHss is therefore essential for an accurate description of such instabilities. Here, we study the low-energy electronic structure of the trilayer strontium ruthenate Sr4Ru3O10, identifying a rich hierarchy of VHss using angle-resolved photoemission spectroscopy and millikelvin scanning tunneling microscopy. Comparison of... (More)

Van Hove singularities (VHss) in the vicinity of the Fermi energy often play a dramatic role in the physics of strongly correlated electron materials. The divergence of the density of states generated by VHss can trigger the emergence of phases such as superconductivity, ferromagnetism, metamagnetism, and density wave orders. A detailed understanding of the electronic structure of these VHss is therefore essential for an accurate description of such instabilities. Here, we study the low-energy electronic structure of the trilayer strontium ruthenate Sr4Ru3O10, identifying a rich hierarchy of VHss using angle-resolved photoemission spectroscopy and millikelvin scanning tunneling microscopy. Comparison of k-resolved electron spectroscopy and quasiparticle interference allows us to determine the structure of the VHss and demonstrate the crucial role of spin-orbit coupling in shaping them. We use this to develop a minimal model from which we identify a mechanism for driving a field-induced Lifshitz transition in ferromagnetic metals.

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publishing date
type
Contribution to journal
publication status
published
subject
in
npj Quantum Materials
volume
9
issue
1
article number
35
publisher
Nature Publishing Group
external identifiers
  • scopus:85189779745
ISSN
2397-4648
DOI
10.1038/s41535-024-00645-3
language
English
LU publication?
yes
id
91233374-ea77-47b9-9b59-b86680d89e69
date added to LUP
2024-04-23 09:17:00
date last changed
2024-04-23 09:18:08
@article{91233374-ea77-47b9-9b59-b86680d89e69,
  abstract     = {{<p>Van Hove singularities (VHss) in the vicinity of the Fermi energy often play a dramatic role in the physics of strongly correlated electron materials. The divergence of the density of states generated by VHss can trigger the emergence of phases such as superconductivity, ferromagnetism, metamagnetism, and density wave orders. A detailed understanding of the electronic structure of these VHss is therefore essential for an accurate description of such instabilities. Here, we study the low-energy electronic structure of the trilayer strontium ruthenate Sr<sub>4</sub>Ru<sub>3</sub>O<sub>10</sub>, identifying a rich hierarchy of VHss using angle-resolved photoemission spectroscopy and millikelvin scanning tunneling microscopy. Comparison of k-resolved electron spectroscopy and quasiparticle interference allows us to determine the structure of the VHss and demonstrate the crucial role of spin-orbit coupling in shaping them. We use this to develop a minimal model from which we identify a mechanism for driving a field-induced Lifshitz transition in ferromagnetic metals.</p>}},
  author       = {{Marques, Carolina A. and Murgatroyd, Philip A.E. and Fittipaldi, Rosalba and Osmolska, Weronika and Edwards, Brendan and Benedičič, Izidor and Siemann, Gesa R. and Rhodes, Luke C. and Buchberger, Sebastian and Naritsuka, Masahiro and Abarca-Morales, Edgar and Halliday, Daniel and Polley, Craig and Leandersson, Mats and Horio, Masafumi and Chang, Johan and Arumugam, Raja and Lettieri, Mariateresa and Granata, Veronica and Vecchione, Antonio and King, Phil D.C. and Wahl, Peter}},
  issn         = {{2397-4648}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{npj Quantum Materials}},
  title        = {{Spin-orbit coupling induced Van Hove singularity in proximity to a Lifshitz transition in Sr<sub>4</sub>Ru<sub>3</sub>O<sub>10</sub>}},
  url          = {{http://dx.doi.org/10.1038/s41535-024-00645-3}},
  doi          = {{10.1038/s41535-024-00645-3}},
  volume       = {{9}},
  year         = {{2024}},
}