Angle-resolved photoemission spectroscopy study of PrFeAsO0.7: Comparison with LaFePO

I. Nishi; M. Ishikado; S. Ideta; W. Malaeb; T. Yoshida; A. Fujimori; Y. Kotani; M. Kubota; K. Ono; M. Yi; D. H. Lu; R. Moore; Z. X. Shen; A. Iyo; K. Kihou; H. Kito; H. Eisaki; S. Shamoto; R. Arita

doi:10.1103/PhysRevB.84.014504

Angle-resolved photoemission spectroscopy study of PrFeAsO_0.7: Comparison with LaFePO

I. Nishi, M. Ishikado, S. Ideta, W. Malaeb, T. Yoshida, A. Fujimori, Y. Kotani, M. Kubota, K. Ono, M. Yi, D. H. Lu, R. Moore, Z. X. Shen, A. Iyo, K. Kihou, H. Kito, H. Eisaki, S. Shamoto, R. Arita

Quantum Heterostructures

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Abstract

We have performed an angle-resolved photoemission spectroscopy (ARPES) study of the iron-based superconductor PrFeAsO_0.7 and examined the Fermi surfaces and band dispersions near the Fermi level. Heavily hole-doped electronic states have been observed due to the polar nature of the cleaved surfaces. Nevertheless, we have found that the ARPES spectra basically agree with band dispersions calculated in the local density approximation (LDA) if the bandwidth is reduced by a factor of ~2.5 and then the chemical potential is lowered by ~70 meV. Comparison with previous ARPES results on LaFePO reveals that the energy positions of the d_3z2-r2- and d_yz,zx- derived bands are considerably different between the two materials, which we attribute to the different pnictogen height as predicted by the LDA calculation.

Original language	English
Article number	014504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.84.014504
State	Published - Jul 11 2011

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Nishi, I., Ishikado, M., Ideta, S., Malaeb, W., Yoshida, T., Fujimori, A., Kotani, Y., Kubota, M., Ono, K., Yi, M., Lu, D. H., Moore, R., Shen, Z. X., Iyo, A., Kihou, K., Kito, H., Eisaki, H., Shamoto, S., & Arita, R. (2011). Angle-resolved photoemission spectroscopy study of PrFeAsO_0.7: Comparison with LaFePO. Physical Review B - Condensed Matter and Materials Physics, 84(1), Article 014504. https://doi.org/10.1103/PhysRevB.84.014504

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title = "Angle-resolved photoemission spectroscopy study of PrFeAsO0.7: Comparison with LaFePO",

abstract = "We have performed an angle-resolved photoemission spectroscopy (ARPES) study of the iron-based superconductor PrFeAsO0.7 and examined the Fermi surfaces and band dispersions near the Fermi level. Heavily hole-doped electronic states have been observed due to the polar nature of the cleaved surfaces. Nevertheless, we have found that the ARPES spectra basically agree with band dispersions calculated in the local density approximation (LDA) if the bandwidth is reduced by a factor of ~2.5 and then the chemical potential is lowered by ~70 meV. Comparison with previous ARPES results on LaFePO reveals that the energy positions of the d3z2-r2- and dyz,zx- derived bands are considerably different between the two materials, which we attribute to the different pnictogen height as predicted by the LDA calculation.",

author = "I. Nishi and M. Ishikado and S. Ideta and W. Malaeb and T. Yoshida and A. Fujimori and Y. Kotani and M. Kubota and K. Ono and M. Yi and Lu, {D. H.} and R. Moore and Shen, {Z. X.} and A. Iyo and K. Kihou and H. Kito and H. Eisaki and S. Shamoto and R. Arita",

year = "2011",

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doi = "10.1103/PhysRevB.84.014504",

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Nishi, I, Ishikado, M, Ideta, S, Malaeb, W, Yoshida, T, Fujimori, A, Kotani, Y, Kubota, M, Ono, K, Yi, M, Lu, DH, Moore, R, Shen, ZX, Iyo, A, Kihou, K, Kito, H, Eisaki, H, Shamoto, S & Arita, R 2011, 'Angle-resolved photoemission spectroscopy study of PrFeAsO_0.7: Comparison with LaFePO', Physical Review B - Condensed Matter and Materials Physics, vol. 84, no. 1, 014504. https://doi.org/10.1103/PhysRevB.84.014504

TY - JOUR

T1 - Angle-resolved photoemission spectroscopy study of PrFeAsO0.7

T2 - Comparison with LaFePO

AU - Nishi, I.

AU - Ishikado, M.

AU - Ideta, S.

AU - Malaeb, W.

AU - Yoshida, T.

AU - Fujimori, A.

AU - Kotani, Y.

AU - Kubota, M.

AU - Ono, K.

AU - Yi, M.

AU - Lu, D. H.

AU - Moore, R.

AU - Shen, Z. X.

AU - Iyo, A.

AU - Kihou, K.

AU - Kito, H.

AU - Eisaki, H.

AU - Shamoto, S.

AU - Arita, R.

PY - 2011/7/11

Y1 - 2011/7/11

N2 - We have performed an angle-resolved photoemission spectroscopy (ARPES) study of the iron-based superconductor PrFeAsO0.7 and examined the Fermi surfaces and band dispersions near the Fermi level. Heavily hole-doped electronic states have been observed due to the polar nature of the cleaved surfaces. Nevertheless, we have found that the ARPES spectra basically agree with band dispersions calculated in the local density approximation (LDA) if the bandwidth is reduced by a factor of ~2.5 and then the chemical potential is lowered by ~70 meV. Comparison with previous ARPES results on LaFePO reveals that the energy positions of the d3z2-r2- and dyz,zx- derived bands are considerably different between the two materials, which we attribute to the different pnictogen height as predicted by the LDA calculation.

AB - We have performed an angle-resolved photoemission spectroscopy (ARPES) study of the iron-based superconductor PrFeAsO0.7 and examined the Fermi surfaces and band dispersions near the Fermi level. Heavily hole-doped electronic states have been observed due to the polar nature of the cleaved surfaces. Nevertheless, we have found that the ARPES spectra basically agree with band dispersions calculated in the local density approximation (LDA) if the bandwidth is reduced by a factor of ~2.5 and then the chemical potential is lowered by ~70 meV. Comparison with previous ARPES results on LaFePO reveals that the energy positions of the d3z2-r2- and dyz,zx- derived bands are considerably different between the two materials, which we attribute to the different pnictogen height as predicted by the LDA calculation.

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 1

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ER -

Angle-resolved photoemission spectroscopy study of PrFeAsO_0.7: Comparison with LaFePO

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