ARPES Study of X-Point Band Overlaps in LaB$_6$ and SmB$_6$ - Contrast to SrB$_6$ and EuB$_6$

C.G. Olson; G.-H. Gweon; H.-D. Kim; H. H\"ochst; J.D. Denlinger; J.L. Sarrao; J.W. Allen; S.-K. Mo; Z. Fisk

arxiv: cond-mat/0107203 · v1 · submitted 2001-07-10 · ❄️ cond-mat.str-el

ARPES Study of X-Point Band Overlaps in LaB₆ and SmB₆ - Contrast to SrB₆ and EuB₆

S.-K. Mo , G.-H. Gweon , J.D. Denlinger , H.-D. Kim , J.W. Allen , C.G. Olson , H. H\"ochst , J.L. Sarrao

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Z. Fisk

This is my paper

classification ❄️ cond-mat.str-el

keywords bandabsentarpescontrastdivalentfindinghexaboridestrivalent

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In contrast to our recent finding of an X-point band gap in divalent hexaborides, we report here that angle resolved photoemission spectroscopy (ARPES) data shows that the gap is absent for trivalent LaB$_6$ and is absent or nearly so for mixed valent SmB$_6$. This finding demonstrates a nontrivial evolution of the band structure from divalent to trivalent hexaborides.

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ARPES Study of X-Point Band Overlaps in LaB₆ and SmB₆ - Contrast to SrB₆ and EuB₆

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