Origins of thermal spin depolarization in half-metallic ferromagnet CrO$_2

Phys. Rev. Lett. 121, 257201 (2018) 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 depolarizati...

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Main Authors Fujiwara, H, Terashima, K, Sunagawa, M, Yano, Y, Nagayama, T, Fukura, T, Yoshii, F, Matsuura, Y, Ogata, M, Wakita, T, Yaji, K, Harasawa, A, Kuroda, K, Shin, S, Horiba, K, Kumigashira, H, Muraoka, Y, Yokoya, T
Format Journal Article
LanguageEnglish
Published 19.12.2018
Subjects
Physics - Strongly Correlated Electrons
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Summary:Phys. Rev. Lett. 121, 257201 (2018) 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.
DOI:10.48550/arxiv.1812.07792