TY - JOUR
T1 - Orbital order and fluctuations in the two-leg ladder materials BaFe2X3 (X= S and Se) and CsFe2Se3
AU - Takubo, Kou
AU - Yokoyama, Yuichi
AU - Wadati, Hiroki
AU - Iwasaki, Shun
AU - Mizokawa, Takashi
AU - Boyko, Teak
AU - Sutarto, Ronny
AU - He, Feizhou
AU - Hashizume, Kazuki
AU - Imaizumi, Satoshi
AU - Aoyama, Takuya
AU - Imai, Yoshinori
AU - Ohgushi, Kenya
N1 - Funding Information:
The authors thank Dr. D. Ootsuki and Dr. Y. Hirata for valuable discussions. Research described in this paper was performed at the Canadian Light Source, which is supported by the Canada Foundation for Innovation, Natural Sciences and Engineering Research Council of Canada, the University of Saskatchewan, the Government of Saskatchewan, Western Economic Diversification Canada, the National Research Council Canada, and the Canadian Institutes of Health Research. This work was supported by the Japan Society for the Promotion of Science (JSPS) of Grant-in-Aid for Young Scientists (B) (Grant No. 16K20997) and for Scientific Research (B) (Grant No. 16H04019). This work was also partially supported by Ministry of Education, Culture, Sports, Science, and Technology of Japan (X-ray Free Electron Laser Priority Strategy Program) and Mitsubishi Foundation.
PY - 2017/9/27
Y1 - 2017/9/27
N2 - The electronic structure of BaFe2X3 (X = S and Se) and CsFe2Se3 in which two-leg ladders are formed by the Fe sites are studied by means of x-ray absorption and resonant inelastic x-ray scattering spectroscopy. The x-ray absorption spectra at the Fe L edges for BaFe2X3 exhibit two components, indicating that itinerant and localized Fe 3d sites coexist. Substantial x-ray linear dichroism is observed in polarization dependent spectra, indicating the existence of orbital order or fluctuation in the Fe ladder even above the Néel temperature TN. Direct exchange interaction along the legs of the Fe ladder stabilizes the orbital and antiferromagnetic orders in BaFe2S3, while the ferromagnetic molecular orbitals are realized between the rungs in CsFe2Se3.
AB - The electronic structure of BaFe2X3 (X = S and Se) and CsFe2Se3 in which two-leg ladders are formed by the Fe sites are studied by means of x-ray absorption and resonant inelastic x-ray scattering spectroscopy. The x-ray absorption spectra at the Fe L edges for BaFe2X3 exhibit two components, indicating that itinerant and localized Fe 3d sites coexist. Substantial x-ray linear dichroism is observed in polarization dependent spectra, indicating the existence of orbital order or fluctuation in the Fe ladder even above the Néel temperature TN. Direct exchange interaction along the legs of the Fe ladder stabilizes the orbital and antiferromagnetic orders in BaFe2S3, while the ferromagnetic molecular orbitals are realized between the rungs in CsFe2Se3.
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U2 - 10.1103/PhysRevB.96.115157
DO - 10.1103/PhysRevB.96.115157
M3 - Article
AN - SCOPUS:85030183686
VL - 96
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 11
M1 - 115157
ER -