20.500.12556/RUL-164507 Anomalous photoinduced band renormalization in correlated materials: the case of Ta▫$_2$▫NiSe▫$_2$▫ We investigate the anomalous photoinduced band renormalization in correlated materials, exemplified by the case of Ta$_2⁢$NiSe$_5$. The manifestation of this anomaly is characterized by the alternating direction of band shift in response to changes in the laser parameters or electron momentum. We attribute the phenomena to the band inversion of the material and the selective excitation of a high-lying flat band, leading to the competition between the Hartree shift and the order collapse. These findings are based on an ab initio determined effective model for Ta$_2⁢$NiSe$_5$, in which we incorporate high-lying states and the time-dependent GW simulation to follow the nonequilibrium dynamics induced by the laser. Our findings reveal the sensitivity of the nonequilibrium electronic dynamics to the band structure and laser protocols, providing valuable guidance for the selection of suitable materials and lasers in the engineering of band structures. condensed matter physics fizika kondenzirane snovi true false true Angleški jezik Slovenski jezik Članek v reviji 2024-10-28 13:53:46 2024-10-28 13:53:47 2024-11-22 14:54:38 0000-00-00 00:00:00 2024 0 0 Str. 115104-1-115104-7 iss. 11 Vol. 110 2024 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 538.9 2469-9950 10.1103/PhysRevB.110.115104 206375171 main_text.pdf main_text.pdf 1 8A9B72C5F34BDEE9003766F774D24EFC 5e5df9918bc420f3fb572d6c910dc407f504d0118e56b0fe7013d0025bb16545 eeae62c4-952b-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=194986 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.110.115104 0 f9cd89d3-952b-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=194987 Fakulteta za matematiko in fiziko 0 0 0