Our paper reporting the first experimental identification of a Kramers nodal line metal in SmAlSi is published today in Comm. Phys. Congratulations to Yichen, Yuxiang from the Morosan group, and Xuejian from KT Law’s group, and all those the contributed!

Our work titled “Kramers nodal lines and Weyl fermions in SmAlSi” just appeared in Comm. Phys. today.
https://www.nature.com/articles/s42005-023-01257-2

Here we report the first experimental realization of a Kramers Nodal Line (KNL) using VUV and soft x-ray ARPES. Guaranteed to appear in all noncentrosymmetric achiral crystals, KNL are a new type of nodal line degeneracy connecting TRIM points in the Brillouin zone. We experimentally identify KNLs in the compound SmAlSi, which belongs to a large LaPtSi-type isostructural family in the space group I41md (#109). In addition, we also identify theoretically and experimentally Weyl fermions located near the Fermi level, and show that the previously proposed Weyl nesting is not likely to play a role in driving the low temperature spin density wave order.

Congratulations to Yichen, who led the work in our group on this paper!

Our paper reporting the first experimental identification of a Kramers nodal line metal in SmAlSi is published today in Comm. Phys. Congratulations to Yichen, Yuxiang from the Morosan group, and Xuejian from KT Law’s group, and all those the contributed!