Controlling the band structure of a Weyl semimetal through nanostructuring.

In recent years exotic relativistic quasiparticles have been found to exist in the band structure ofdifferent materials, like Dirac fermions in graphene, or topological insulating states in topologicalinsulators. Recently it was shown for first time that one of such band configurations to have aneffect on a collective property like the magnetism. In NdAlSi, it was reported that the existence ofWeyl nodes was in the root of a magnetic helical ordering. The objective of this experiment is totest the effect of size reduction in such helical order. This experiment will shed light into the effectof electronic confinement in the relativistic quasiparticles.