Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn2As2 and BaMn2Sb2

W. L. Zhang; P. Richard; A. Van Roekeghem; S. M. Nie; N. Xu; P. Zhang; H. Miao; S. F. Wu; J. X. Yin; B. B. Fu; L. Y. Kong; T. Qian; Z. J. Wang; Z. Fang; A. S. Sefat; S. Biermann; H. Ding

doi:10.1103/PhysRevB.94.155155

Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn2As2 and BaMn2Sb2

W. L. Zhang, P. Richard, A. Van Roekeghem, S. M. Nie, N. Xu, P. Zhang, H. Miao, S. F. Wu, J. X. Yin, B. B. Fu, L. Y. Kong, T. Qian, Z. J. Wang, Z. Fang, A. S. Sefat, S. Biermann, H. Ding

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Abstract

We performed an angle-resolved photoemission spectroscopy study of BaMn2As2 and BaMn2Sb2, which are isostructural to the parent compound BaFe2As2 of the 122 family of ferropnictide superconductors. We show the existence of a strongly kz-dependent band gap with a minimum at the Brillouin zone center, in agreement with their semiconducting properties. Despite the half filling of the electronic 3d shell, we show that the band structure in these materials is almost not renormalized from the Kohn-Sham bands of density functional theory. Our photon-energy-dependent study provides evidence for Mn-pnictide hybridization, which may play a role in tuning the electronic correlations in these compounds.

Original language	English
Article number	155155
Journal	Physical Review B
Volume	94
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.94.155155
State	Published - Oct 31 2016
Externally published	Yes

Funding

This work was supported by grants from MOST (Grants No. 2011CBA001000, No. 2011CBA00102, No. 2012CB821403, No. 2013CB921703, No. 2015CB921301, No. 2016YFA0300300, and No. 2016YFA0401000) and NSFC (Grant No. 11004232, No. 11034011/A0402, No. 11234014, No. 11274362, No. 11674371, and No. 11504117) from China, a Consolidator Grant of the European Research Council (Project No. 617196) and supercomputing time at IDRIS/GENCI Orsay (Project No. t2016091393).

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Zhang, W. L., Richard, P., Van Roekeghem, A., Nie, S. M., Xu, N., Zhang, P., Miao, H., Wu, S. F., Yin, J. X., Fu, B. B., Kong, L. Y., Qian, T., Wang, Z. J., Fang, Z., Sefat, A. S., Biermann, S., & Ding, H. (2016). Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn2As2 and BaMn2Sb2. Physical Review B, 94(15), Article 155155. https://doi.org/10.1103/PhysRevB.94.155155

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title = "Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn2As2 and BaMn2Sb2",

abstract = "We performed an angle-resolved photoemission spectroscopy study of BaMn2As2 and BaMn2Sb2, which are isostructural to the parent compound BaFe2As2 of the 122 family of ferropnictide superconductors. We show the existence of a strongly kz-dependent band gap with a minimum at the Brillouin zone center, in agreement with their semiconducting properties. Despite the half filling of the electronic 3d shell, we show that the band structure in these materials is almost not renormalized from the Kohn-Sham bands of density functional theory. Our photon-energy-dependent study provides evidence for Mn-pnictide hybridization, which may play a role in tuning the electronic correlations in these compounds.",

author = "Zhang, {W. L.} and P. Richard and {Van Roekeghem}, A. and Nie, {S. M.} and N. Xu and P. Zhang and H. Miao and Wu, {S. F.} and Yin, {J. X.} and Fu, {B. B.} and Kong, {L. Y.} and T. Qian and Wang, {Z. J.} and Z. Fang and Sefat, {A. S.} and S. Biermann and H. Ding",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = oct,

day = "31",

doi = "10.1103/PhysRevB.94.155155",

language = "English",

volume = "94",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

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Zhang, WL, Richard, P, Van Roekeghem, A, Nie, SM, Xu, N, Zhang, P, Miao, H, Wu, SF, Yin, JX, Fu, BB, Kong, LY, Qian, T, Wang, ZJ, Fang, Z, Sefat, AS, Biermann, S & Ding, H 2016, 'Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn2As2 and BaMn2Sb2', Physical Review B, vol. 94, no. 15, 155155. https://doi.org/10.1103/PhysRevB.94.155155

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T1 - Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn2As2 and BaMn2Sb2

AU - Zhang, W. L.

AU - Richard, P.

AU - Van Roekeghem, A.

AU - Nie, S. M.

AU - Xu, N.

AU - Zhang, P.

AU - Miao, H.

AU - Wu, S. F.

AU - Yin, J. X.

AU - Fu, B. B.

AU - Kong, L. Y.

AU - Qian, T.

AU - Wang, Z. J.

AU - Fang, Z.

AU - Sefat, A. S.

AU - Biermann, S.

AU - Ding, H.

PY - 2016/10/31

Y1 - 2016/10/31

N2 - We performed an angle-resolved photoemission spectroscopy study of BaMn2As2 and BaMn2Sb2, which are isostructural to the parent compound BaFe2As2 of the 122 family of ferropnictide superconductors. We show the existence of a strongly kz-dependent band gap with a minimum at the Brillouin zone center, in agreement with their semiconducting properties. Despite the half filling of the electronic 3d shell, we show that the band structure in these materials is almost not renormalized from the Kohn-Sham bands of density functional theory. Our photon-energy-dependent study provides evidence for Mn-pnictide hybridization, which may play a role in tuning the electronic correlations in these compounds.

AB - We performed an angle-resolved photoemission spectroscopy study of BaMn2As2 and BaMn2Sb2, which are isostructural to the parent compound BaFe2As2 of the 122 family of ferropnictide superconductors. We show the existence of a strongly kz-dependent band gap with a minimum at the Brillouin zone center, in agreement with their semiconducting properties. Despite the half filling of the electronic 3d shell, we show that the band structure in these materials is almost not renormalized from the Kohn-Sham bands of density functional theory. Our photon-energy-dependent study provides evidence for Mn-pnictide hybridization, which may play a role in tuning the electronic correlations in these compounds.

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JO - Physical Review B

JF - Physical Review B

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Angle-resolved photoemission observation of Mn-pnictide hybridization and negligible band structure renormalization in BaMn2As2 and BaMn2Sb2

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