2026-07-20T03:24:35Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/80902023-11-23T01:05:28Zcom_10259.4_2527com_10259_5086com_10259_2604col_10259.4_2528

Bolívar, Juan Carlos Cordero Tejedor, Nicolás A. Nagy, Ágnes Romera, Elvira 2018-09 Silicene, as other 2D buckled structures, is a gapped Dirac material with intrinsic spin-orbit coupling whose band structure can be controlled by applying a perpendicular electric field. It presents a topological phase transition from a topological insulator to a band insulator at the charge neutrality point. We present in this article a characterization of this phase transition by using fidelity of Loschmidt echoes when a magnetic and two slightly different electric fields are applied by considering the time evolution of two kinds of wave packets, one with a single Gaussian profile and the other with a double Gaussian profile creating a cat state. We also show that Zitterbewegung, classical, and revival Loschmidt periods diverge close to but not exactly at the charge neutrality point and explain this behavior. application/pdf http://hdl.handle.net/10259/8090 eng Wiley Fidelity as a marker of topological phase transitions in 2D Dirac materials info:eu-repo/semantics/article TEXT RIUBU. Repositorio Institucional de la Universidad de Burgos Hispana