Spin-orbit coupling in the Mott insulator Ca2RuO4

L. H. Tjeng; G. A. Sawatzky; N. B. Brookes; H. Fukazawa; S. Nakatsuji; Takashi Mizokawa; G. Ghiringhelli; O. Tjernberg; Y. Maeno

Spin-orbit coupling in the Mott insulator Ca₂RuO₄

L. H. Tjeng, G. A. Sawatzky, N. B. Brookes, H. Fukazawa, S. Nakatsuji, Takashi Mizokawa, G. Ghiringhelli, O. Tjernberg, Y. Maeno

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Abstract

The spin-resolved circularly polarized photoemission measurement of Ca₂RuO₂ was carried out. It was found that the strong spin-orbit coupling induces the substantial orbital angular momentum in the Ru 4d t_2g band. The large temperature dependence of the 0 1s XAS data shows that the orbital population of the t_2g band is drastically changed by the small compression of the RuO₆ octahedra and the strong spin-orbit interaction.

Original language	English
Article number	077202
Pages (from-to)	077202/1-077202/4
Journal	Physical Review Letters
Volume	87
Issue number	7
Publication status	Published - 2001 Aug 13
Externally published	Yes

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ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Tjeng, L. H., Sawatzky, G. A., Brookes, N. B., Fukazawa, H., Nakatsuji, S., Mizokawa, T., Ghiringhelli, G., Tjernberg, O., & Maeno, Y. (2001). Spin-orbit coupling in the Mott insulator Ca₂RuO₄ Physical Review Letters, 87(7), 077202/1-077202/4. [077202].

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abstract = "The spin-resolved circularly polarized photoemission measurement of Ca2RuO2 was carried out. It was found that the strong spin-orbit coupling induces the substantial orbital angular momentum in the Ru 4d t2g band. The large temperature dependence of the 0 1s XAS data shows that the orbital population of the t2g band is drastically changed by the small compression of the RuO6 octahedra and the strong spin-orbit interaction.",

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AU - Tjeng, L. H.

AU - Sawatzky, G. A.

AU - Brookes, N. B.

AU - Fukazawa, H.

AU - Nakatsuji, S.

AU - Mizokawa, Takashi

AU - Ghiringhelli, G.

AU - Tjernberg, O.

AU - Maeno, Y.

PY - 2001/8/13

Y1 - 2001/8/13

N2 - The spin-resolved circularly polarized photoemission measurement of Ca2RuO2 was carried out. It was found that the strong spin-orbit coupling induces the substantial orbital angular momentum in the Ru 4d t2g band. The large temperature dependence of the 0 1s XAS data shows that the orbital population of the t2g band is drastically changed by the small compression of the RuO6 octahedra and the strong spin-orbit interaction.

AB - The spin-resolved circularly polarized photoemission measurement of Ca2RuO2 was carried out. It was found that the strong spin-orbit coupling induces the substantial orbital angular momentum in the Ru 4d t2g band. The large temperature dependence of the 0 1s XAS data shows that the orbital population of the t2g band is drastically changed by the small compression of the RuO6 octahedra and the strong spin-orbit interaction.

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