Magnetic dichroism in angle-resolved hard x-ray photoemission from buried layers

Xeniya Kozina; Gerhard H. Fecher; Gregory Stryganyuk; Siham Ouardi; Benjamin Balke; Claudia Felser; Gerd Schönhense; Eiji Ikenaga; Takeharu Sugiyama; Naomi Kawamura; Motohiro Suzuki; Tomoyuki Taira; Tetsuya Uemura; Masafumi Yamamoto; Hiroaki Sukegawa; Wenhong Wang; Koichiro Inomata; Keisuke Kobayashi

doi:10.1103/PhysRevB.84.054449

Magnetic dichroism in angle-resolved hard x-ray photoemission from buried layers

Xeniya Kozina, Gerhard H. Fecher, Gregory Stryganyuk, Siham Ouardi, Benjamin Balke, Claudia Felser, Gerd Schönhense, Eiji Ikenaga, Takeharu Sugiyama, Naomi Kawamura, Motohiro Suzuki, Tomoyuki Taira, Tetsuya Uemura, Masafumi Yamamoto, Hiroaki Sukegawa, Wenhong Wang, Koichiro Inomata, Keisuke Kobayashi

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

27 Citations (Scopus)

Abstract

This work reports the measurement of magnetic dichroism in angular-resolved photoemission from in-plane magnetized buried thin films. The high bulk sensitivity of hard x-ray photoelectron spectroscopy (HAXPES) in combination with circularly polarized radiation enables the investigation of the magnetic properties of buried layers. HAXPES experiments with an excitation energy of 8 keV were performed on exchange-biased magnetic layers covered by thin oxide films. Two types of structures were investigated with the IrMn exchange-biasing layer either above or below the ferromagnetic layer: one with a CoFe layer on top and another with a Co₂FeAl layer buried beneath the IrMn layer. A pronounced magnetic dichroism is found in the Co and Fe 2p states of both materials. The localization of the magnetic moments at the Fe site conditioning the peculiar characteristics of the Co₂FeAl Heusler compound, predicted to be a half-metallic ferromagnet, is revealed from the magnetic dichroism detected in the Fe 2p states.

Original language	English
Article number	054449
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.84.054449
Publication status	Published - Aug 15 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.84.054449

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Kozina, X., Fecher, G. H., Stryganyuk, G., Ouardi, S., Balke, B., Felser, C., Schönhense, G., Ikenaga, E., Sugiyama, T., Kawamura, N., Suzuki, M., Taira, T., Uemura, T., Yamamoto, M., Sukegawa, H., Wang, W., Inomata, K., & Kobayashi, K. (2011). Magnetic dichroism in angle-resolved hard x-ray photoemission from buried layers. Physical Review B - Condensed Matter and Materials Physics, 84(5), Article 054449. https://doi.org/10.1103/PhysRevB.84.054449

Kozina, X, Fecher, GH, Stryganyuk, G, Ouardi, S, Balke, B, Felser, C, Schönhense, G, Ikenaga, E, Sugiyama, T, Kawamura, N, Suzuki, M, Taira, T, Uemura, T, Yamamoto, M, Sukegawa, H, Wang, W, Inomata, K & Kobayashi, K 2011, 'Magnetic dichroism in angle-resolved hard x-ray photoemission from buried layers', Physical Review B - Condensed Matter and Materials Physics, vol. 84, no. 5, 054449. https://doi.org/10.1103/PhysRevB.84.054449

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title = "Magnetic dichroism in angle-resolved hard x-ray photoemission from buried layers",

abstract = "This work reports the measurement of magnetic dichroism in angular-resolved photoemission from in-plane magnetized buried thin films. The high bulk sensitivity of hard x-ray photoelectron spectroscopy (HAXPES) in combination with circularly polarized radiation enables the investigation of the magnetic properties of buried layers. HAXPES experiments with an excitation energy of 8 keV were performed on exchange-biased magnetic layers covered by thin oxide films. Two types of structures were investigated with the IrMn exchange-biasing layer either above or below the ferromagnetic layer: one with a CoFe layer on top and another with a Co2FeAl layer buried beneath the IrMn layer. A pronounced magnetic dichroism is found in the Co and Fe 2p states of both materials. The localization of the magnetic moments at the Fe site conditioning the peculiar characteristics of the Co2FeAl Heusler compound, predicted to be a half-metallic ferromagnet, is revealed from the magnetic dichroism detected in the Fe 2p states.",

author = "Xeniya Kozina and Fecher, {Gerhard H.} and Gregory Stryganyuk and Siham Ouardi and Benjamin Balke and Claudia Felser and Gerd Sch{\"o}nhense and Eiji Ikenaga and Takeharu Sugiyama and Naomi Kawamura and Motohiro Suzuki and Tomoyuki Taira and Tetsuya Uemura and Masafumi Yamamoto and Hiroaki Sukegawa and Wenhong Wang and Koichiro Inomata and Keisuke Kobayashi",

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doi = "10.1103/PhysRevB.84.054449",

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AU - Kozina, Xeniya

AU - Fecher, Gerhard H.

AU - Stryganyuk, Gregory

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AU - Balke, Benjamin

AU - Felser, Claudia

AU - Schönhense, Gerd

AU - Ikenaga, Eiji

AU - Sugiyama, Takeharu

AU - Kawamura, Naomi

AU - Suzuki, Motohiro

AU - Taira, Tomoyuki

AU - Uemura, Tetsuya

AU - Yamamoto, Masafumi

AU - Sukegawa, Hiroaki

AU - Wang, Wenhong

AU - Inomata, Koichiro

AU - Kobayashi, Keisuke

PY - 2011/8/15

Y1 - 2011/8/15

N2 - This work reports the measurement of magnetic dichroism in angular-resolved photoemission from in-plane magnetized buried thin films. The high bulk sensitivity of hard x-ray photoelectron spectroscopy (HAXPES) in combination with circularly polarized radiation enables the investigation of the magnetic properties of buried layers. HAXPES experiments with an excitation energy of 8 keV were performed on exchange-biased magnetic layers covered by thin oxide films. Two types of structures were investigated with the IrMn exchange-biasing layer either above or below the ferromagnetic layer: one with a CoFe layer on top and another with a Co2FeAl layer buried beneath the IrMn layer. A pronounced magnetic dichroism is found in the Co and Fe 2p states of both materials. The localization of the magnetic moments at the Fe site conditioning the peculiar characteristics of the Co2FeAl Heusler compound, predicted to be a half-metallic ferromagnet, is revealed from the magnetic dichroism detected in the Fe 2p states.

AB - This work reports the measurement of magnetic dichroism in angular-resolved photoemission from in-plane magnetized buried thin films. The high bulk sensitivity of hard x-ray photoelectron spectroscopy (HAXPES) in combination with circularly polarized radiation enables the investigation of the magnetic properties of buried layers. HAXPES experiments with an excitation energy of 8 keV were performed on exchange-biased magnetic layers covered by thin oxide films. Two types of structures were investigated with the IrMn exchange-biasing layer either above or below the ferromagnetic layer: one with a CoFe layer on top and another with a Co2FeAl layer buried beneath the IrMn layer. A pronounced magnetic dichroism is found in the Co and Fe 2p states of both materials. The localization of the magnetic moments at the Fe site conditioning the peculiar characteristics of the Co2FeAl Heusler compound, predicted to be a half-metallic ferromagnet, is revealed from the magnetic dichroism detected in the Fe 2p states.

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Magnetic dichroism in angle-resolved hard x-ray photoemission from buried layers

Abstract

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