期刊
PHYSICAL REVIEW B
卷 86, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.075105
关键词
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资金
- JSPS of Japan [22340107]
- Grants-in-Aid for Scientific Research [24760536, 22340107] Funding Source: KAKEN
We report the temperature-dependent three-dimensional angle-resolved photoemission spectra of the Kondo semiconductor SmB6. We found a difference in the temperature dependence of the peaks at the X and Gamma points, due to hybridization between the Sm 5d conduction band and the nearly localized Sm 4f state. The peak intensity at the X point has the same temperature dependence as the valence transition below 120 K, while that at the Gamma point is consistent with the magnetic excitation at Q = (0.5,0.5,0.5) below 30 K. This suggests that the hybridization with the valence transition mainly occurs near the X point, and the initial state of the magnetic excitation is located near the Gamma point.
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