LEADER 03916nam 22006855 450 001 9910728936803321 005 20230530203316.0 010 $a9783031257711$b(electronic bk.) 010 $z9783031257704 024 7 $a10.1007/978-3-031-25771-1 035 $a(MiAaPQ)EBC30555886 035 $a(Au-PeEL)EBL30555886 035 $a(OCoLC)1381095862 035 $a(DE-He213)978-3-031-25771-1 035 $a(BIP)087041576 035 $a(PPN)270614281 035 $a(CKB)26806703400041 035 $a(EXLCZ)9926806703400041 100 $a20230530d2023 u| 0 101 0 $aeng 135 $aurcnu|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aLinear and Nonlinear Optical Responses of Chiral Multifold Semimetals /$fby Miguel Ángel Sánchez Martínez 205 $a1st ed. 2023. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2023. 215 $a1 online resource (128 pages) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5061 311 08$aPrint version: Sánchez Martínez, Miguel Ángel Linear and Nonlinear Optical Responses of Chiral Multifold Semimetals Cham : Springer International Publishing AG,c2023 9783031257704 327 $aIntroduction -- Chiral Multifold Fermions -- Linear Optical Conductivity of Chiral Multifold Fermions: K · P and Tight-Binding Models -- Linear Optical Conductivity of CoSi and RhSi: Experimental Fingerprints Of Chiral Multifold Fermions In Real Materials -- Nonlinear Optical Responses: Second-Harmonic Generation In Rhsi. 330 $aSince the initial predictions for the existence of Weyl fermions in condensed matter, many different experimental techniques have confirmed the existence of Weyl semimetals. Among these techniques, optical responses have shown a variety of effects associated with the existence of Weyl fermions. In chiral crystals, we find a new type of fermions protected by crystal symmetries ? the chiral multifold fermions ? that can be understood as a higher-spin generalization of Weyl fermions. This work analyzes how multifold fermions interact with light and highlights the power of optical responses to identify and characterize multifold fermions and the materials hosting them. In particular, we find optical selection rules, compute the linear optical response of all chiral multifold fermions, and analyze the non-linear optical responses and their relation to the presence of topological bands. Finally, the research presented here analyzes the theoretical foundations and experimental features of optical responses of two multifold semimetals, RhSi and CoSi, connecting the observed features with the theoretical predictions and demonstrating the power of optical responses to understand real-life multifold semimetals. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5061 606 $aCondensed matter 606 $aTopological insulators 606 $aNanophotonics 606 $aPlasmonics 606 $aCondensed Matter Physics 606 $aTopological Material 606 $aPhase Transition and Critical Phenomena 606 $aNanophotonics and Plasmonics 610 $aPhysics 610 $aScience 615 0$aCondensed matter. 615 0$aTopological insulators. 615 0$aNanophotonics. 615 0$aPlasmonics. 615 14$aCondensed Matter Physics. 615 24$aTopological Material. 615 24$aPhase Transition and Critical Phenomena. 615 24$aNanophotonics and Plasmonics. 676 $a530.41 676 $a530.41 700 $aSánchez Martínez$b Miguel Ángel$01367058 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 912 $a9910728936803321 996 $aLinear and Nonlinear Optical Responses of Chiral Multifold Semimetals$93389800 997 $aUNINA