Common origin of the circular-dichroism pattern in angle-resolved photoemission spectroscopy of SrTiO3 and CuxBi 2Se3

Y. Ishida*, H. Kanto, A. Kikkawa, Y. Taguchi, Y. Ito, Y. Ota, K. Okazaki, W. Malaeb, M. Mulazzi, M. Okawa, S. Watanabe, C. T. Chen, M. Kim, C. Bell, Y. Kozuka, H. Y. Hwang, Y. Tokura, S. Shin

*この研究の対応する著者

研究成果: Article査読

30 被引用数 (Scopus)

抄録

Circular dichroism in the angular distribution of photoelectrons from SrTiO3:Nb and CuxBi2Se3 is investigated by 7-eV laser angle-resolved photoemission spectroscopy. In addition to the well-known node that occurs in the circular dichroism pattern when the incidence plane matches the mirror plane of the crystal, we show that another type of node occurs when the mirror plane of the crystal is vertical to the incidence plane and the electronic state is two-dimensional. The flower-shaped circular dichroism patterns in the angular distribution occurring around the Fermi level of SrTiO3:Nb and around the Dirac point of CuxBi2Se3 are explained on equal footings. We point out that the penetration depth of the topological states of Cu xBi2Se3 depends on momentum.

本文言語English
論文番号077601
ジャーナルPhysical Review Letters
107
7
DOI
出版ステータスPublished - 2011 8 9
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Common origin of the circular-dichroism pattern in angle-resolved photoemission spectroscopy of SrTiO<sub>3</sub> and Cu<sub>x</sub>Bi <sub>2</sub>Se<sub>3</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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