Abstract
We report the temperature-dependent three-dimensional angle-resolved photoemission spectra of the Kondo semiconductor SmB. We found a difference in the temperature dependence of the peaks at the and points, due to hybridization between the Sm conduction band and the nearly localized Sm state. The peak intensity at the point has the same temperature dependence as the valence transition below 120 K, while that at the point is consistent with the magnetic excitation at below 30 K. This suggests that the hybridization with the valence transition mainly occurs near the point, and the initial state of the magnetic excitation is located near the point.
- Received 15 June 2011
DOI:https://doi.org/10.1103/PhysRevB.86.075105
©2012 American Physical Society