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Thesis High-Resolution Photoemission Study of Kondo Insulators ...

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132 Chapter 9. Conclusion<br />

developed set up for the measurement in Chap. 8 was designed by K. Kobayashi. The<br />

author appreciates the contribution by J. Okabayashi, T. Yoshida, and Y. Ishikawa to<br />

improve the set up. Prior to the construction, Y. Aiura (Electrotechnical Laboratory)<br />

sent us valuable information on the low-temperature photoemission technique. The author<br />

thanks S. Otsuka (University <strong>of</strong> Tokyo) for checking our drawing and for technical<br />

support.<br />

T. Konishi helped the author to develop the algorithm for the calculation <strong>of</strong> Yb<br />

4f photoemission spectra with the Anderson impurity model at 0 K. The algorithm <strong>of</strong><br />

the Anderson impurity model at finite temperature was coded by R. Takayama and O.<br />

Sakai (Tohoku University). A careful maintenance <strong>of</strong> the workstation and helpful advice<br />

by K. Mamiya and J. Matsuno was indispensable for these numerical calculations. H.<br />

Harima (Osaka University) sent unpublished results <strong>of</strong> the band-structure calculation<br />

for YbB12 and LuB12.<br />

The author has enjoyed discussion with S.-J. Oh (Seoul National University), K.<br />

Ueda (University <strong>of</strong> Tokyo), T. Saso and K. Urasaki (Saitama University), T. Kasuya<br />

(Tohoku University), T. Ekino (Hiroshima University), L. F. Mattheiss (Bell Laboratories),<br />

H. Okamura (Kobe University), and H. Kumigashira (Tohoku University).<br />

The present work has been financially supported by a Research Fellowship <strong>of</strong> the<br />

Japan Society for the Promotion <strong>of</strong> Science for Young Scientists and Special Coordination<br />

Fund for Promoting Science and Technology from the Agency <strong>of</strong> Science and<br />

Technology.

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