Origins of thermal spin depolarization in half-metallic ferromagnet CrO2

Hirokazu Fujiwara; Kensei Terashima; Masanori Sunagawa; Yuko Yano; Takanobu Nagayama; Tetsushi Fukura; Fumiya Yoshii; Yuka Matsuura; Makoto Ogata; Takanori Wakita; Koichiro Yaji; Ayumi Harasawa; Kenta Kuroda; Shik Shin; Koji Horiba; Hiroshi Kumigashira; Yuji Muraoka; Takayoshi Yokoya

Origins of thermal spin depolarization in half-metallic ferromagnet CrO2

Hirokazu Fujiwara, Kensei Terashima, Masanori Sunagawa, Yuko Yano, Takanobu Nagayama, Tetsushi Fukura, Fumiya Yoshii, Yuka Matsuura, Makoto Ogata, Takanori Wakita, Koichiro Yaji, Ayumi Harasawa, Kenta Kuroda, Shik Shin, Koji Horiba, Hiroshi Kumigashira, Yuji Muraoka, Takayoshi Yokoya

Research Institute for Interdisciplinary Science

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

Abstract

Using high-resolution spin-resolved photoemission spectroscopy, we observed a thermal spin depolarization to which all spin-polarized electrons contribute. Furthermore we observed a distinct minority spin state near the Fermi level and a corresponding depolarization that seldom contributes to demagnetization. The origin of this depolarization has been identified as the many-body effect characteristics of half-metallic ferromagnets. Our investigation opens an experimental field of itinerant ferromagnetic physics focusing on phenomena with sub-meV energy scale.

Original language	English
Journal	Unknown Journal
Publication status	Published - Dec 19 2018

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Origins of thermal spin depolarization in half-metallic ferromagnet CrO2. / Fujiwara, Hirokazu; Terashima, Kensei; Sunagawa, Masanori; Yano, Yuko; Nagayama, Takanobu; Fukura, Tetsushi; Yoshii, Fumiya; Matsuura, Yuka; Ogata, Makoto; Wakita, Takanori; Yaji, Koichiro; Harasawa, Ayumi; Kuroda, Kenta; Shin, Shik; Horiba, Koji; Kumigashira, Hiroshi; Muraoka, Yuji ; Yokoya, Takayoshi.

In: Unknown Journal, 19.12.2018.

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

Fujiwara, Hirokazu ; Terashima, Kensei ; Sunagawa, Masanori ; Yano, Yuko ; Nagayama, Takanobu ; Fukura, Tetsushi ; Yoshii, Fumiya ; Matsuura, Yuka ; Ogata, Makoto ; Wakita, Takanori ; Yaji, Koichiro ; Harasawa, Ayumi ; Kuroda, Kenta ; Shin, Shik ; Horiba, Koji ; Kumigashira, Hiroshi ; Muraoka, Yuji ; Yokoya, Takayoshi. / Origins of thermal spin depolarization in half-metallic ferromagnet CrO2. In: Unknown Journal. 2018.

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abstract = "Using high-resolution spin-resolved photoemission spectroscopy, we observed a thermal spin depolarization to which all spin-polarized electrons contribute. Furthermore we observed a distinct minority spin state near the Fermi level and a corresponding depolarization that seldom contributes to demagnetization. The origin of this depolarization has been identified as the many-body effect characteristics of half-metallic ferromagnets. Our investigation opens an experimental field of itinerant ferromagnetic physics focusing on phenomena with sub-meV energy scale.",

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T1 - Origins of thermal spin depolarization in half-metallic ferromagnet CrO2

AU - Fujiwara, Hirokazu

AU - Terashima, Kensei

AU - Sunagawa, Masanori

AU - Yano, Yuko

AU - Nagayama, Takanobu

AU - Fukura, Tetsushi

AU - Yoshii, Fumiya

AU - Matsuura, Yuka

AU - Ogata, Makoto

AU - Wakita, Takanori

AU - Yaji, Koichiro

AU - Harasawa, Ayumi

AU - Kuroda, Kenta

AU - Shin, Shik

AU - Horiba, Koji

AU - Kumigashira, Hiroshi

AU - Muraoka, Yuji

AU - Yokoya, Takayoshi

PY - 2018/12/19

Y1 - 2018/12/19

N2 - Using high-resolution spin-resolved photoemission spectroscopy, we observed a thermal spin depolarization to which all spin-polarized electrons contribute. Furthermore we observed a distinct minority spin state near the Fermi level and a corresponding depolarization that seldom contributes to demagnetization. The origin of this depolarization has been identified as the many-body effect characteristics of half-metallic ferromagnets. Our investigation opens an experimental field of itinerant ferromagnetic physics focusing on phenomena with sub-meV energy scale.

AB - Using high-resolution spin-resolved photoemission spectroscopy, we observed a thermal spin depolarization to which all spin-polarized electrons contribute. Furthermore we observed a distinct minority spin state near the Fermi level and a corresponding depolarization that seldom contributes to demagnetization. The origin of this depolarization has been identified as the many-body effect characteristics of half-metallic ferromagnets. Our investigation opens an experimental field of itinerant ferromagnetic physics focusing on phenomena with sub-meV energy scale.

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