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Universality of charge doping driven metal-insulator transition in Sr2RhO4 and role of spin-orbit coupling

Kwon, Junyoung ; Soltani, Shoresh LU orcid ; Polley, Craig LU ; Jung, Jongkeun ; Kim, Minsoo ; Kim, Donghan ; Denlinger, Jonathan ; Song, Dongjoon ; Yoshida, Yoshiyuki and Kyung, Wonshik , et al. (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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organization
publishing date
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}},
}