@article{1468495,
      note = {"Doctoral thesis accepted by Université Grenoble Alpes,  Grenodle, France."},
      author = {Sánchez Martínez, Miguel Ángel.},
      url = {http://library.usi.edu/record/1468495},
      title = {Linear and nonlinear optical responses of chiral multifold  semimetals /},
      publisher = {Springer,},
      abstract = {Since the initial predictions for the existence of Weyl  fermions in condensed matter, many different experimental  techniques have confirmed the existence of Weyl semimetals.  Among these techniques, optical responses have shown a  variety of effects associated with the existence of Weyl  fermions. In chiral crystals, we find a new type of  fermions protected by crystal symmetries the chiral  multifold fermions that can be understood as a higher-spin  generalization of Weyl fermions. This work analyzes how  multifold fermions interact with light and highlights the  power of optical responses to identify and characterize  multifold fermions and the materials hosting them. In  particular, we find optical selection rules, compute the  linear optical response of all chiral multifold fermions,  and analyze the non-linear optical responses and their  relation to the presence of topological bands. Finally, the  research presented here analyzes the theoretical  foundations and experimental features of optical responses  of two multifold semimetals, RhSi and CoSi, connecting the  observed features with the theoretical predictions and  demonstrating the power of optical responses to understand  real-life multifold semimetals.},
      doi = {https://doi.org/10.1007/978-3-031-25771-1},
      recid = {1468495},
      pages = {1 online resource (128 p.).},
      address = {Cham :},
      year = {2023},
}