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The electronic structure of the Nb (110) surface is studied using angle-resolved photoemission. The properties of the Σ₁ band crossing at the Fermi energy are examined in detail. A comparison is made with similar measurements for Mo (110) to evaluate the validity of a rigid-band approximation. The final states along Σ are also studied using synchrotron radiation as a source.
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Smith et al. (1980) studied this question.
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