RT info:eu-repo/semantics/article
T1 Quantum revivals in HgTe/CdTe quantum wells and topological phase transitions
A1 Mayorgas, Alberto
A1 Calixto, Manuel
A1 Cordero Tejedor, Nicolás A.
A1 Romera, Elvira
A1 Castaños Garza, Octavio Héctor
K1 Física
K1 Physics
K1 Materiales
K1 Materials
AB The time evolution of a wave packet is a tool to detect topological phase transitions in two-dimensional Dirac materials, such as graphene and silicene. Here we extend the analysis to HgTe/CdTe quantum wells and study the evolution of their electron current wave packet, using 2D effective Dirac Hamiltonians and different layer thicknesses. We show that the two different periodicities that appear in this temporal evolution reach a minimum near the critical thickness, where the system goes from normal to inverted regime. Moreover, the maximum of the electron current amplitude changes with the layer thickness, identifying that current maxima reach their higher value at the critical thickness. Thus, we can characterize the topological phase transitions in terms of the periodicity and amplitude of the electron currents.
PB SciPost Foundation
SN 2666-9366
YR 2024
FD 2024-05-13
LK http://hdl.handle.net/10259/9184
UL http://hdl.handle.net/10259/9184
LA eng
NO We thank the support of Spanish MICIU through the project PID2022- 138144NB-I00. AM thanks the Spanish MIU for the FPU19/06376 predoctoral fellowship. OC is on sabbatical leave at Granada University, Spain, since the 1st of September 2023. OC thanks support from the program PASPA from DGAPA-UNAM.
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024