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

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

doi:10.1016/S0921-4526(01)01291-1

paper

ARPES Study of X-Point Band Overlaps in LaB $_{6}$ and SmB $_{6}$ - Contrast to SrB $_{6}$ and EuB $_{6}$

arXiv:cond-mat/0107203 · doi:10.1016/S0921-4526(01)01291-1

Abstract

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.

submitted to SCES '01

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

Abstract

ARPES Study of X-Point Band Overlaps in LaB $_{6}$ and SmB $_{6}$ - Contrast to SrB $_{6}$ and EuB $_{6}$