Influence of oxygen coordination number on the electronic structure of single-layer La-based cuprates
(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.
(Less)
- author
- organization
- publishing date
- 2023-07
- 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}}, }