Observation of the coherent quasiparticle states in SrRu1-xIrxO3 films via polarization-dependent soft X-ray absorption spectroscopy

Seungho Seong; D. H. Kim; Eunsook Lee; Abhijit Biswas; Yoon Hee Jeong; B. I. Min; Bongjae Kim; Younghak Kim; Jaeyoon Baik; J. S. Kang

doi:10.1063/1.5052326

Observation of the coherent quasiparticle states in SrRu_1-xIr_xO₃ films via polarization-dependent soft X-ray absorption spectroscopy

Seungho Seong, D. H. Kim, Eunsook Lee, Abhijit Biswas, Yoon Hee Jeong, B. I. Min, Bongjae Kim, Younghak Kim, Jaeyoon Baik, J. S. Kang

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Abstract

The electronic structures of SrRu 1 − xIr xO 3 films ( 0 ≤ x ≤ 1) have been investigated by employing polarization-dependent soft X-ray absorption spectroscopy. In SrIrO 3, the coherent quasi-particle peak at the Fermi level ( E F) is clearly observed, reflecting the spin-orbit-coupled correlated metallic nature of SrIrO 3. X-ray linear dichroism signals for x = 0 and x = 1 are negligibly weak, demonstrating the pseudo-cubic structure for SrRuO 3 and the strong spin-orbit coupling in SrIrO 3. In contrast, finite linear dichroism is observed for the intermediate x regime, indicating that the narrow d x z ↓ and d y z ↓ bands close to E F are occupied less than the wide d x y ↓ band due to the enhanced in-plane hopping.

Original language	English
Article number	205102
Journal	Journal of Applied Physics
Volume	124
Issue number	20
DOIs	https://doi.org/10.1063/1.5052326
State	Published - 28 Nov 2018

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@article{b1bb1abcc9b84a4487cdad7d937b8e57,

title = "Observation of the coherent quasiparticle states in SrRu1-xIrxO3 films via polarization-dependent soft X-ray absorption spectroscopy",

abstract = "The electronic structures of SrRu 1 − xIr xO 3 films ( 0 ≤ x ≤ 1) have been investigated by employing polarization-dependent soft X-ray absorption spectroscopy. In SrIrO 3, the coherent quasi-particle peak at the Fermi level ( E F) is clearly observed, reflecting the spin-orbit-coupled correlated metallic nature of SrIrO 3. X-ray linear dichroism signals for x = 0 and x = 1 are negligibly weak, demonstrating the pseudo-cubic structure for SrRuO 3 and the strong spin-orbit coupling in SrIrO 3. In contrast, finite linear dichroism is observed for the intermediate x regime, indicating that the narrow d x z ↓ and d y z ↓ bands close to E F are occupied less than the wide d x y ↓ band due to the enhanced in-plane hopping.",

author = "Seungho Seong and Kim, \{D. H.\} and Eunsook Lee and Abhijit Biswas and Jeong, \{Yoon Hee\} and Min, \{B. I.\} and Bongjae Kim and Younghak Kim and Jaeyoon Baik and Kang, \{J. S.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Author(s).",

year = "2018",

month = nov,

day = "28",

doi = "10.1063/1.5052326",

language = "English",

volume = "124",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

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T1 - Observation of the coherent quasiparticle states in SrRu1-xIrxO3 films via polarization-dependent soft X-ray absorption spectroscopy

AU - Seong, Seungho

AU - Kim, D. H.

AU - Lee, Eunsook

AU - Biswas, Abhijit

AU - Jeong, Yoon Hee

AU - Min, B. I.

AU - Kim, Bongjae

AU - Kim, Younghak

AU - Baik, Jaeyoon

AU - Kang, J. S.

PY - 2018/11/28

Y1 - 2018/11/28

N2 - The electronic structures of SrRu 1 − xIr xO 3 films ( 0 ≤ x ≤ 1) have been investigated by employing polarization-dependent soft X-ray absorption spectroscopy. In SrIrO 3, the coherent quasi-particle peak at the Fermi level ( E F) is clearly observed, reflecting the spin-orbit-coupled correlated metallic nature of SrIrO 3. X-ray linear dichroism signals for x = 0 and x = 1 are negligibly weak, demonstrating the pseudo-cubic structure for SrRuO 3 and the strong spin-orbit coupling in SrIrO 3. In contrast, finite linear dichroism is observed for the intermediate x regime, indicating that the narrow d x z ↓ and d y z ↓ bands close to E F are occupied less than the wide d x y ↓ band due to the enhanced in-plane hopping.

AB - The electronic structures of SrRu 1 − xIr xO 3 films ( 0 ≤ x ≤ 1) have been investigated by employing polarization-dependent soft X-ray absorption spectroscopy. In SrIrO 3, the coherent quasi-particle peak at the Fermi level ( E F) is clearly observed, reflecting the spin-orbit-coupled correlated metallic nature of SrIrO 3. X-ray linear dichroism signals for x = 0 and x = 1 are negligibly weak, demonstrating the pseudo-cubic structure for SrRuO 3 and the strong spin-orbit coupling in SrIrO 3. In contrast, finite linear dichroism is observed for the intermediate x regime, indicating that the narrow d x z ↓ and d y z ↓ bands close to E F are occupied less than the wide d x y ↓ band due to the enhanced in-plane hopping.

UR - http://www.scopus.com/inward/record.url?scp=85057552645&partnerID=8YFLogxK

U2 - 10.1063/1.5052326

DO - 10.1063/1.5052326

M3 - Article

AN - SCOPUS:85057552645

SN - 0021-8979

VL - 124

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 20

M1 - 205102

ER -

Observation of the coherent quasiparticle states in SrRu_1-xIr_xO₃ films via polarization-dependent soft X-ray absorption spectroscopy

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