Determination of the orbital polarization in YTiO3 by using soft x-ray linear dichroism -: art. no. 257207

被引：43

作者：

Iga, F ^{[1
]}

Tsubota, M

Sawada, M

Huang, HB

Kura, S

Takemura, M

Yaji, K

Nagira, M

Kimura, A

Jo, T

Takabatake, T

Namatame, H

Taniguchi, M

机构：

[1] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[2] Hiroshima Univ, Hiroshima Synchrotron Radiat Ctr, Higashihiroshima 7398526, Japan

[3] Hiroshima Univ, Fac Sci, Dept Phys, Higashihiroshima 7398526, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.93.257207

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report measurements of linear dichroism in x-ray absorption at Ti L-2,L-3 edges of a Mott-insulating ferromagnet YTiO3, where orbital ordering occurs in the triply degenerate Ti 3d t(2g) states. Dichroic spectra and their integrated intensities are obtained for the incident electric field with polarizations parallel to a, b, and c axes. The comparison of the spectra with atomic multiplet calculations removes the ambiguity about the orbital polarization, i.e., the relative weights of |xy>, |yz>, and |zx> orbits, which are crucial for the origin of ferromagnetism. The result is consistent with the previous analysis of nuclear magnetic resonance in the Mizokawa-Fujimori scheme.

引用

页数：4

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