20.500.12556/RUL-156340 High-harmonic generation in semi-Dirac and Weyl semimetals with broken time-reversal symmetry: exploration of the merging of Weyl nodes We explore anomalous high-harmonic generation in a model that realizes a transition from a broken time-reversal symmetry Weyl semimetal to a semi-Dirac regime, i.e., a gapless semimetal with dispersion that is parabolic in one direction and conical in the other two. We point out the intensity of the induced anomalous high harmonics is high in the semi-Dirac regime. For Weyl semimetals, we reveal anomalous high harmonics are due to excitations at momenta where the dispersion is not strictly linear and that in the linearized low-energy theory the anomalous response is harmonic only. Our findings aid in the experimental characterizations of Weyl, Dirac, and semi-Dirac semimetals. condensed matter physics fizika kondenzirane snovi true false true Angleški jezik Slovenski jezik Članek v reviji 2024-05-21 09:04:28 2024-05-21 09:04:30 2024-05-22 03:48:13 0000-00-00 00:00:00 2024 0 0 Str. 205130-1-205130-6 iss. 20 Vol. 109 2024 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-05-13 538.9 2469-9950 10.1103/PhysRevB.109.205130 195400707 2402.12899v1.pdf 2402.12899v1.pdf 1 56D6E65400793931BDD3CE97438856FA 9696918551e6f3c3e1727c79ce05075c7a6c9fe2e59e841276c1e02a0ce93bda 8cc2db62-1740-11ef-b8e5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=183749 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.109.205130 0 9561e786-1740-11ef-b8e5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=183750 Fakulteta za matematiko in fiziko 0 0 0