Dual Character of 5f Electrons in UPd 2Al 3 Observed by High-Resolution Photoemission Spectroscopy
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概要
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Comparative high-resolution temperature-dependent photoemission measurements were performed for UPd2Al3 and UPd3. The photoemission spectrum near E F of UPd2Al3 consists of a sharp peak at E F and a broad band at 0.5–1.0 eV binding energy, both features having U 5f character. The sharp feature at E F shows good agreement with a recent band structure calculation, while the broad band matches well with the U 5f-derived localized feature in UPd3, indicating the dual character of 5f electrons in UPd2Al3. The intensity of the broad band relative to the E F-peak increases with increasing temperature, suggesting that the localized character of 5f electrons in UPd2Al3 increases at higher temperatures. These observations are consistent with the transport and magnetic measurements which imply a temperature-dependent dual (itinerant and localized) character of U 5f electrons in UPd2Al3.
- Physical Society of Japanの論文
- 1996-01-15
著者
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Chainani Ashish
Department Of Physics Tohoku University
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Komatsubara Takemi
Department Of Physics Faculty Of Science Tohoku University
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Yokoya Takayoshi
Department Of Physics
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Morimoto Takayuki
Department Of Chemistry And Chemical Engineering Graduate School Of Engineering Hiroshima University
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Sato Noriaki
Department Of Electronics Faculty Of Engineering Nagoya University
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Takahashi Takashi
Department Of Applied Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Techno
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Komatsubara Takemi
Department of Physics, Tohoku University, Sendai 980-77
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Yokoya Takayoshi
Department of Physics, Tohoku University, Sendai 980-77
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Chainani Ashish
Department of Physics, Tohoku University, Sendai 980-77
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Takahashi Takashi
Department of Physics, Tohoku University, Sendai 980-77
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Morimoto Takayuki
Department of Physics, Tohoku University, Sendai 980-77
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Sato Noriaki
Department of Electrical and Electronic Engineering, Tokyo Institute of Technology
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Sato Noriaki
Department of Physics, Tohoku University, Sendai 980-77
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