Intrinsic correlated electronic structure of CrO2 revealed by hard x-ray photoemission spectroscopy

M. Sperlich; C. König; G. Güntherodt; A. Sekiyama; G. Funabashi; M. Tsunekawa; S. Imada; A. Shigemoto; K. Okada; A. Higashiya; M. Yabashi; K. Tamasaku; T. Ishikawa; V. Renken; T. Allmers; M. Donath; S. Suga

doi:10.1103/PhysRevB.87.235138

Intrinsic correlated electronic structure of CrO₂ revealed by hard x-ray photoemission spectroscopy

M. Sperlich, C. König, G. Güntherodt, A. Sekiyama, G. Funabashi, M. Tsunekawa, S. Imada, A. Shigemoto, K. Okada, A. Higashiya, M. Yabashi, K. Tamasaku, T. Ishikawa, V. Renken, T. Allmers, M. Donath, S. Suga

研究成果 › 査読

13 被引用数 (Scopus)

抄録

Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for as-grown epitaxial films of half-metallic ferromagnetic CrO₂(100) a pronounced screening feature in the Cr 2p_3/2 core level and an asymmetry in the O 1s core level. This gives evidence of a finite, metal-type Fermi edge, which is surprisingly not observed in HAXPES. A spectral weight shift in HAXPES to below the Fermi energy is attributed to single-ion recoil effects due to high-energy photoelectrons. In conjunction with inverse PES the intrinsic correlated Mott-Hubbard-type electronic structure is unraveled, yielding an averaged Coulomb correlation energy U_av ≅ 3.2 eV.

本文言語	English
論文番号	235138
ジャーナル	Physical Review B - Condensed Matter and Materials Physics
巻	87
号	23
DOI	https://doi.org/10.1103/PhysRevB.87.235138
出版ステータス	Published - 6月 27 2013

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

文献へのアクセス

10.1103/PhysRevB.87.235138

他のファイルとリンク

引用スタイル

Sperlich, M., König, C., Güntherodt, G., Sekiyama, A., Funabashi, G., Tsunekawa, M., Imada, S., Shigemoto, A., Okada, K., Higashiya, A., Yabashi, M., Tamasaku, K., Ishikawa, T., Renken, V., Allmers, T., Donath, M., & Suga, S. (2013). Intrinsic correlated electronic structure of CrO₂ revealed by hard x-ray photoemission spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 87(23), [235138]. https://doi.org/10.1103/PhysRevB.87.235138

Sperlich, M, König, C, Güntherodt, G, Sekiyama, A, Funabashi, G, Tsunekawa, M, Imada, S, Shigemoto, A, Okada, K, Higashiya, A, Yabashi, M, Tamasaku, K, Ishikawa, T, Renken, V, Allmers, T, Donath, M & Suga, S 2013, 'Intrinsic correlated electronic structure of CrO₂ revealed by hard x-ray photoemission spectroscopy', Physical Review B - Condensed Matter and Materials Physics, vol. 87, no. 23, 235138. https://doi.org/10.1103/PhysRevB.87.235138

@article{858bb5cbc36b41489b4f13d70d42112e,

title = "Intrinsic correlated electronic structure of CrO2 revealed by hard x-ray photoemission spectroscopy",

abstract = "Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for as-grown epitaxial films of half-metallic ferromagnetic CrO2(100) a pronounced screening feature in the Cr 2p3/2 core level and an asymmetry in the O 1s core level. This gives evidence of a finite, metal-type Fermi edge, which is surprisingly not observed in HAXPES. A spectral weight shift in HAXPES to below the Fermi energy is attributed to single-ion recoil effects due to high-energy photoelectrons. In conjunction with inverse PES the intrinsic correlated Mott-Hubbard-type electronic structure is unraveled, yielding an averaged Coulomb correlation energy Uav ≅ 3.2 eV.",

author = "M. Sperlich and C. K{\"o}nig and G. G{\"u}ntherodt and A. Sekiyama and G. Funabashi and M. Tsunekawa and S. Imada and A. Shigemoto and K. Okada and A. Higashiya and M. Yabashi and K. Tamasaku and T. Ishikawa and V. Renken and T. Allmers and M. Donath and S. Suga",

year = "2013",

month = jun,

day = "27",

doi = "10.1103/PhysRevB.87.235138",

language = "English",

volume = "87",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "23",

}

TY - JOUR

T1 - Intrinsic correlated electronic structure of CrO2 revealed by hard x-ray photoemission spectroscopy

AU - Sperlich, M.

AU - König, C.

AU - Güntherodt, G.

AU - Sekiyama, A.

AU - Funabashi, G.

AU - Tsunekawa, M.

AU - Imada, S.

AU - Shigemoto, A.

AU - Okada, K.

AU - Higashiya, A.

AU - Yabashi, M.

AU - Tamasaku, K.

AU - Ishikawa, T.

AU - Renken, V.

AU - Allmers, T.

AU - Donath, M.

AU - Suga, S.

PY - 2013/6/27

Y1 - 2013/6/27

N2 - Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for as-grown epitaxial films of half-metallic ferromagnetic CrO2(100) a pronounced screening feature in the Cr 2p3/2 core level and an asymmetry in the O 1s core level. This gives evidence of a finite, metal-type Fermi edge, which is surprisingly not observed in HAXPES. A spectral weight shift in HAXPES to below the Fermi energy is attributed to single-ion recoil effects due to high-energy photoelectrons. In conjunction with inverse PES the intrinsic correlated Mott-Hubbard-type electronic structure is unraveled, yielding an averaged Coulomb correlation energy Uav ≅ 3.2 eV.

AB - Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for as-grown epitaxial films of half-metallic ferromagnetic CrO2(100) a pronounced screening feature in the Cr 2p3/2 core level and an asymmetry in the O 1s core level. This gives evidence of a finite, metal-type Fermi edge, which is surprisingly not observed in HAXPES. A spectral weight shift in HAXPES to below the Fermi energy is attributed to single-ion recoil effects due to high-energy photoelectrons. In conjunction with inverse PES the intrinsic correlated Mott-Hubbard-type electronic structure is unraveled, yielding an averaged Coulomb correlation energy Uav ≅ 3.2 eV.

UR - http://www.scopus.com/inward/record.url?scp=84879727462&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879727462&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.87.235138

DO - 10.1103/PhysRevB.87.235138

M3 - Article

AN - SCOPUS:84879727462

SN - 1098-0121

VL - 87

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

IS - 23

M1 - 235138

ER -