Orbital-Dependent modifications of electronic structure across the magnetostructural transition in BaFe2As2

T. Shimojima; K. Ishizaka; Y. Ishida; N. Katayama; K. Ohgushi; T. Kiss; M. Okawa; T. Togashi; X. Y. Wang; C. T. Chen; S. Watanabe; R. Kadota; T. Oguchi; A. Chainani; S. Shin

doi:10.1103/PhysRevLett.104.057002

Orbital-Dependent modifications of electronic structure across the magnetostructural transition in BaFe2As2

T. Shimojima^*, K. Ishizaka, Y. Ishida, N. Katayama, K. Ohgushi, T. Kiss, M. Okawa, T. Togashi, X. Y. Wang, C. T. Chen, S. Watanabe, R. Kadota, T. Oguchi, A. Chainani, S. Shin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

161 Citations (Scopus)

Abstract

Laser angle-resolved photoemission spectroscopy (ARPES) is employed to investigate the temperature (T) dependence of the electronic structure in BaFe2As2 across the magnetostructural transition at TN∼140K. A drastic transformation in Fermi surface (FS) shape across TN is observed, as expected by first-principles band calculations. Polarization-dependent ARPES and band calculations consistently indicate that the observed FSs at kz∼π in the low-T antiferromagnetic state are dominated by the Fe3dzx orbital, leading to the twofold electronic structure. These results indicate that magnetostructural transition in BaFe2As2 accompanies orbital-dependent modifications in the electronic structure.

Original language	English
Article number	057002
Journal	Physical Review Letters
Volume	104
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.104.057002
Publication status	Published - 2010 Feb 3
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.104.057002

Cite this

Shimojima, T., Ishizaka, K., Ishida, Y., Katayama, N., Ohgushi, K., Kiss, T., Okawa, M., Togashi, T., Wang, X. Y., Chen, C. T., Watanabe, S., Kadota, R., Oguchi, T., Chainani, A., & Shin, S. (2010). Orbital-Dependent modifications of electronic structure across the magnetostructural transition in BaFe2As2. Physical Review Letters, 104(5), Article 057002. https://doi.org/10.1103/PhysRevLett.104.057002

Shimojima, T, Ishizaka, K, Ishida, Y, Katayama, N, Ohgushi, K, Kiss, T, Okawa, M, Togashi, T, Wang, XY, Chen, CT, Watanabe, S, Kadota, R, Oguchi, T, Chainani, A & Shin, S 2010, 'Orbital-Dependent modifications of electronic structure across the magnetostructural transition in BaFe2As2', Physical Review Letters, vol. 104, no. 5, 057002. https://doi.org/10.1103/PhysRevLett.104.057002

@article{e6894e3044964986b5156d9939e36b67,

title = "Orbital-Dependent modifications of electronic structure across the magnetostructural transition in BaFe2As2",

abstract = "Laser angle-resolved photoemission spectroscopy (ARPES) is employed to investigate the temperature (T) dependence of the electronic structure in BaFe2As2 across the magnetostructural transition at TN∼140K. A drastic transformation in Fermi surface (FS) shape across TN is observed, as expected by first-principles band calculations. Polarization-dependent ARPES and band calculations consistently indicate that the observed FSs at kz∼π in the low-T antiferromagnetic state are dominated by the Fe3dzx orbital, leading to the twofold electronic structure. These results indicate that magnetostructural transition in BaFe2As2 accompanies orbital-dependent modifications in the electronic structure.",

author = "T. Shimojima and K. Ishizaka and Y. Ishida and N. Katayama and K. Ohgushi and T. Kiss and M. Okawa and T. Togashi and Wang, {X. Y.} and Chen, {C. T.} and S. Watanabe and R. Kadota and T. Oguchi and A. Chainani and S. Shin",

year = "2010",

month = feb,

day = "3",

doi = "10.1103/PhysRevLett.104.057002",

language = "English",

volume = "104",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Orbital-Dependent modifications of electronic structure across the magnetostructural transition in BaFe2As2

AU - Shimojima, T.

AU - Ishizaka, K.

AU - Ishida, Y.

AU - Katayama, N.

AU - Ohgushi, K.

AU - Kiss, T.

AU - Okawa, M.

AU - Togashi, T.

AU - Wang, X. Y.

AU - Chen, C. T.

AU - Watanabe, S.

AU - Kadota, R.

AU - Oguchi, T.

AU - Chainani, A.

AU - Shin, S.

PY - 2010/2/3

Y1 - 2010/2/3

N2 - Laser angle-resolved photoemission spectroscopy (ARPES) is employed to investigate the temperature (T) dependence of the electronic structure in BaFe2As2 across the magnetostructural transition at TN∼140K. A drastic transformation in Fermi surface (FS) shape across TN is observed, as expected by first-principles band calculations. Polarization-dependent ARPES and band calculations consistently indicate that the observed FSs at kz∼π in the low-T antiferromagnetic state are dominated by the Fe3dzx orbital, leading to the twofold electronic structure. These results indicate that magnetostructural transition in BaFe2As2 accompanies orbital-dependent modifications in the electronic structure.

AB - Laser angle-resolved photoemission spectroscopy (ARPES) is employed to investigate the temperature (T) dependence of the electronic structure in BaFe2As2 across the magnetostructural transition at TN∼140K. A drastic transformation in Fermi surface (FS) shape across TN is observed, as expected by first-principles band calculations. Polarization-dependent ARPES and band calculations consistently indicate that the observed FSs at kz∼π in the low-T antiferromagnetic state are dominated by the Fe3dzx orbital, leading to the twofold electronic structure. These results indicate that magnetostructural transition in BaFe2As2 accompanies orbital-dependent modifications in the electronic structure.

UR - http://www.scopus.com/inward/record.url?scp=76249123969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=76249123969&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.104.057002

DO - 10.1103/PhysRevLett.104.057002

M3 - Article

AN - SCOPUS:76249123969

SN - 0031-9007

VL - 104

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 057002

ER -

Orbital-Dependent modifications of electronic structure across the magnetostructural transition in BaFe2As2

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this