Universality of charge doping driven metal-insulator transition in Sr2RhO4 and role of spin-orbit coupling
(2022) In Physical Review B 106(24).- Abstract
We performed angle-resolved photoemission spectroscopy (ARPES) experiments on an electron-doped Sr2RhO4 system Sr2-xCexRhO4 in order to investigate the electron doping-induced metal-insulator transition (MIT). We establish the universality of MIT in electron-doped Sr2RhO4 by comparing results from Sr2-xLaxRhO4 and Sr2-xCexRhO4. Via a systematic analysis of doping-dependent transport and ARPES data, we show that the correlation driven MIT with a noninteger electron number in electron-doped Sr2RhO4 is universal and thus independent of the dopant. Within the universality, the ARPES analysis shows that the band topology determined by the spin-orbit coupling (SOC) is likely a control parameter of the insulating gap size and critical electron... (More)
We performed angle-resolved photoemission spectroscopy (ARPES) experiments on an electron-doped Sr2RhO4 system Sr2-xCexRhO4 in order to investigate the electron doping-induced metal-insulator transition (MIT). We establish the universality of MIT in electron-doped Sr2RhO4 by comparing results from Sr2-xLaxRhO4 and Sr2-xCexRhO4. Via a systematic analysis of doping-dependent transport and ARPES data, we show that the correlation driven MIT with a noninteger electron number in electron-doped Sr2RhO4 is universal and thus independent of the dopant. Within the universality, the ARPES analysis shows that the band topology determined by the spin-orbit coupling (SOC) is likely a control parameter of the insulating gap size and critical electron number of the MIT. We present a phase diagram of the insulating phase as a function of the effective SOC and electron number.
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- author
- organization
- publishing date
- 2022-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 106
- issue
- 24
- article number
- L241114
- publisher
- American Physical Society
- external identifiers
-
- scopus:85145583988
- ISSN
- 2469-9950
- DOI
- 10.1103/PhysRevB.106.L241114
- language
- English
- LU publication?
- yes
- id
- 9917eb35-8b8b-4c1c-b81e-a6f8f21d6b8a
- date added to LUP
- 2023-01-16 15:28:06
- date last changed
- 2023-01-16 15:28:06
@article{9917eb35-8b8b-4c1c-b81e-a6f8f21d6b8a, abstract = {{<p>We performed angle-resolved photoemission spectroscopy (ARPES) experiments on an electron-doped Sr2RhO4 system Sr2-xCexRhO4 in order to investigate the electron doping-induced metal-insulator transition (MIT). We establish the universality of MIT in electron-doped Sr2RhO4 by comparing results from Sr2-xLaxRhO4 and Sr2-xCexRhO4. Via a systematic analysis of doping-dependent transport and ARPES data, we show that the correlation driven MIT with a noninteger electron number in electron-doped Sr2RhO4 is universal and thus independent of the dopant. Within the universality, the ARPES analysis shows that the band topology determined by the spin-orbit coupling (SOC) is likely a control parameter of the insulating gap size and critical electron number of the MIT. We present a phase diagram of the insulating phase as a function of the effective SOC and electron number.</p>}}, author = {{Kwon, Junyoung and Soltani, Shoresh and Polley, Craig and Jung, Jongkeun and Kim, Minsoo and Kim, Donghan and Denlinger, Jonathan and Song, Dongjoon and Yoshida, Yoshiyuki and Kyung, Wonshik and Kim, Changyoung}}, issn = {{2469-9950}}, language = {{eng}}, number = {{24}}, publisher = {{American Physical Society}}, series = {{Physical Review B}}, title = {{Universality of charge doping driven metal-insulator transition in Sr2RhO4 and role of spin-orbit coupling}}, url = {{http://dx.doi.org/10.1103/PhysRevB.106.L241114}}, doi = {{10.1103/PhysRevB.106.L241114}}, volume = {{106}}, year = {{2022}}, }