K-doping dependence of the fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy

Chang Liu; G. D. Samolyuk; Y. Lee; Ni Ni; Takeshi Kondo; A. F. Santander-Syro; S. L. Bud'Ko; J. L. McChesney; E. Rotenberg; T. Valla; A. V. Fedorov; P. C. Canfield; B. N. Harmon; A. Kaminski

doi:10.1103/PhysRevLett.101.177005

K-doping dependence of the fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy

Chang Liu, G. D. Samolyuk, Y. Lee, Ni Ni, Takeshi Kondo, A. F. Santander-Syro, S. L. Bud'Ko, J. L. McChesney, E. Rotenberg, T. Valla, A. V. Fedorov, P. C. Canfield, B. N. Harmon, A. Kaminski

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Abstract

We use angle-resolved photoemission spectroscopy to investigate the electronic properties of the newly discovered iron-arsenic superconductor Ba1-xKxFe2As2 and nonsuperconducting BaFe2As2. Our study indicates that the Fermi surface of the undoped, parent compound BaFe2As2 consists of hole pocket(s) at Γ (0,0) and larger electron pocket(s) at X (1,0), in general agreement with full-potential linearized plane wave calculations. Upon doping with potassium, the hole pocket expands and the electron pocket becomes smaller with its bottom approaching the chemical potential. Such an evolution of the Fermi surface is consistent with hole doping within a rigid-band shift model. Our results also indicate that the full-potential linearized plane wave calculation is a reasonable approach for modeling the electronic properties of both undoped and K-doped iron arsenites.

Original language	English
Article number	177005
Journal	Physical Review Letters
Volume	101
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.101.177005
State	Published - Oct 24 2008
Externally published	Yes

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Liu, C., Samolyuk, G. D., Lee, Y., Ni, N., Kondo, T., Santander-Syro, A. F., Bud'Ko, S. L., McChesney, J. L., Rotenberg, E., Valla, T., Fedorov, A. V., Canfield, P. C., Harmon, B. N., & Kaminski, A. (2008). K-doping dependence of the fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy. Physical Review Letters, 101(17), Article 177005. https://doi.org/10.1103/PhysRevLett.101.177005

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title = "K-doping dependence of the fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy",

abstract = "We use angle-resolved photoemission spectroscopy to investigate the electronic properties of the newly discovered iron-arsenic superconductor Ba1-xKxFe2As2 and nonsuperconducting BaFe2As2. Our study indicates that the Fermi surface of the undoped, parent compound BaFe2As2 consists of hole pocket(s) at Γ (0,0) and larger electron pocket(s) at X (1,0), in general agreement with full-potential linearized plane wave calculations. Upon doping with potassium, the hole pocket expands and the electron pocket becomes smaller with its bottom approaching the chemical potential. Such an evolution of the Fermi surface is consistent with hole doping within a rigid-band shift model. Our results also indicate that the full-potential linearized plane wave calculation is a reasonable approach for modeling the electronic properties of both undoped and K-doped iron arsenites.",

author = "Chang Liu and Samolyuk, {G. D.} and Y. Lee and Ni Ni and Takeshi Kondo and Santander-Syro, {A. F.} and Bud'Ko, {S. L.} and McChesney, {J. L.} and E. Rotenberg and T. Valla and Fedorov, {A. V.} and Canfield, {P. C.} and Harmon, {B. N.} and A. Kaminski",

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doi = "10.1103/PhysRevLett.101.177005",

language = "English",

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Liu, C, Samolyuk, GD, Lee, Y, Ni, N, Kondo, T, Santander-Syro, AF, Bud'Ko, SL, McChesney, JL, Rotenberg, E, Valla, T, Fedorov, AV, Canfield, PC, Harmon, BN & Kaminski, A 2008, 'K-doping dependence of the fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy', Physical Review Letters, vol. 101, no. 17, 177005. https://doi.org/10.1103/PhysRevLett.101.177005

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T1 - K-doping dependence of the fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy

AU - Liu, Chang

AU - Samolyuk, G. D.

AU - Lee, Y.

AU - Ni, Ni

AU - Kondo, Takeshi

AU - Santander-Syro, A. F.

AU - Bud'Ko, S. L.

AU - McChesney, J. L.

AU - Rotenberg, E.

AU - Valla, T.

AU - Fedorov, A. V.

AU - Canfield, P. C.

AU - Harmon, B. N.

AU - Kaminski, A.

PY - 2008/10/24

Y1 - 2008/10/24

N2 - We use angle-resolved photoemission spectroscopy to investigate the electronic properties of the newly discovered iron-arsenic superconductor Ba1-xKxFe2As2 and nonsuperconducting BaFe2As2. Our study indicates that the Fermi surface of the undoped, parent compound BaFe2As2 consists of hole pocket(s) at Γ (0,0) and larger electron pocket(s) at X (1,0), in general agreement with full-potential linearized plane wave calculations. Upon doping with potassium, the hole pocket expands and the electron pocket becomes smaller with its bottom approaching the chemical potential. Such an evolution of the Fermi surface is consistent with hole doping within a rigid-band shift model. Our results also indicate that the full-potential linearized plane wave calculation is a reasonable approach for modeling the electronic properties of both undoped and K-doped iron arsenites.

AB - We use angle-resolved photoemission spectroscopy to investigate the electronic properties of the newly discovered iron-arsenic superconductor Ba1-xKxFe2As2 and nonsuperconducting BaFe2As2. Our study indicates that the Fermi surface of the undoped, parent compound BaFe2As2 consists of hole pocket(s) at Γ (0,0) and larger electron pocket(s) at X (1,0), in general agreement with full-potential linearized plane wave calculations. Upon doping with potassium, the hole pocket expands and the electron pocket becomes smaller with its bottom approaching the chemical potential. Such an evolution of the Fermi surface is consistent with hole doping within a rigid-band shift model. Our results also indicate that the full-potential linearized plane wave calculation is a reasonable approach for modeling the electronic properties of both undoped and K-doped iron arsenites.

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K-doping dependence of the fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy

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