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Influence of oxygen coordination number on the electronic structure of single-layer La-based cuprates

Horio, M. ; Peiao, X. ; Miyamoto, M. ; Wada, T. ; Isomura, K. ; Osiecki, J. LU ; Thiagarajan, B. LU ; Polley, C. M. LU ; Tanaka, K. and Kitamura, M. , et al. (2023) In Physical Review B 108(3).
Abstract

We present an angle-resolved photoemission spectroscopy study of the single-layer T∗-type structured cuprate SmLa1-xSrxCuO4 with unique fivefold pyramidal oxygen coordination. Upon varying oxygen content, T∗-SmLa1-xSrxCuO4 evolved from a Mott-insulating to a metallic state where the Luttinger sum rule breaks down under the assumption of a large holelike Fermi surface. This is in contrast with the known doping evolution of the structural isomer La2-xSrxCuO4 with sixfold octahedral coordination. In addition, quantitatively characterized Fermi surface suggests that the empirical Tc rule for octahedral oxygen-coordination systems does not apply to T∗-SmLa1-xSrxCuO4. The present results highlight unique properties of the T∗-type cuprates... (More)

We present an angle-resolved photoemission spectroscopy study of the single-layer T∗-type structured cuprate SmLa1-xSrxCuO4 with unique fivefold pyramidal oxygen coordination. Upon varying oxygen content, T∗-SmLa1-xSrxCuO4 evolved from a Mott-insulating to a metallic state where the Luttinger sum rule breaks down under the assumption of a large holelike Fermi surface. This is in contrast with the known doping evolution of the structural isomer La2-xSrxCuO4 with sixfold octahedral coordination. In addition, quantitatively characterized Fermi surface suggests that the empirical Tc rule for octahedral oxygen-coordination systems does not apply to T∗-SmLa1-xSrxCuO4. The present results highlight unique properties of the T∗-type cuprates possibly rooted in its oxygen coordination, and necessitate thorough investigation with careful evaluation of disorder effects.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B
volume
108
issue
3
article number
035105
publisher
American Physical Society
external identifiers
  • scopus:85164584188
ISSN
2469-9950
DOI
10.1103/PhysRevB.108.035105
language
English
LU publication?
yes
id
8cc67854-da0f-46f6-9cdc-e5d17462dea1
date added to LUP
2023-09-11 12:54:11
date last changed
2023-09-11 12:54:11
@article{8cc67854-da0f-46f6-9cdc-e5d17462dea1,
  abstract     = {{<p>We present an angle-resolved photoemission spectroscopy study of the single-layer T∗-type structured cuprate SmLa1-xSrxCuO4 with unique fivefold pyramidal oxygen coordination. Upon varying oxygen content, T∗-SmLa1-xSrxCuO4 evolved from a Mott-insulating to a metallic state where the Luttinger sum rule breaks down under the assumption of a large holelike Fermi surface. This is in contrast with the known doping evolution of the structural isomer La2-xSrxCuO4 with sixfold octahedral coordination. In addition, quantitatively characterized Fermi surface suggests that the empirical Tc rule for octahedral oxygen-coordination systems does not apply to T∗-SmLa1-xSrxCuO4. The present results highlight unique properties of the T∗-type cuprates possibly rooted in its oxygen coordination, and necessitate thorough investigation with careful evaluation of disorder effects.</p>}},
  author       = {{Horio, M. and Peiao, X. and Miyamoto, M. and Wada, T. and Isomura, K. and Osiecki, J. and Thiagarajan, B. and Polley, C. M. and Tanaka, K. and Kitamura, M. and Horiba, K. and Ozawa, K. and Taniguchi, T. and Fujita, M. and Matsuda, I.}},
  issn         = {{2469-9950}},
  language     = {{eng}},
  number       = {{3}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B}},
  title        = {{Influence of oxygen coordination number on the electronic structure of single-layer La-based cuprates}},
  url          = {{http://dx.doi.org/10.1103/PhysRevB.108.035105}},
  doi          = {{10.1103/PhysRevB.108.035105}},
  volume       = {{108}},
  year         = {{2023}},
}