Strong in-plane anisotropy in the electronic structure of fixed-valence $\beta$-LuAlB$_4$

The origin of intrinsic quantum criticality in the heavy-fermion superconductor $β$ -YbAlB $_{4}$ has been attributed to strong Yb valence fluctuations and its peculiar crystal structure. Here, we assess these contributions individually by studying the isostructural but fixed-valence compound $β$ -LuAlB $_{4}$ . Quantum oscillation measurements and DFT calculations reveal a Fermi surface markedly different from that of $β$ -YbAlB $_{4}$ , consistent with a `large’ Fermi surface there. We also find an unexpected in-plane anisotropy of the electronic structure, in contrast to the isotropic Kondo hybridization in $β$ -YbAlB $_{4}$ .

Strong in-plane anisotropy in the electronic structure of fixed-valence $β$ -LuAlB $_{4}$

文献摘要

讨论

讲解博客

AI智能校验

Strong in-plane anisotropy in the electronic structure of fixed-valence $β$ -LuAlB $_{4}$

文献摘要

讨论

讲解博客

AI智能校验

Strong in-plane anisotropy in the electronic structure of fixed-valence ββ-LuAlB44​

文献摘要

讨论

|讲解博客

|AI智能校验

Strong in-plane anisotropy in the electronic structure of fixed-valence ββ-LuAlB44​

文献摘要

讨论

|讲解博客

|AI智能校验

Strong in-plane anisotropy in the electronic structure of fixed-valence $β$ -LuAlB $_{4}$

讲解博客

AI智能校验

Strong in-plane anisotropy in the electronic structure of fixed-valence $β$ -LuAlB $_{4}$

讲解博客

AI智能校验