2026-04-19T07:55:10Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/82192023-12-19T01:05:19Zcom_10259.4_2527com_10259_5086com_10259_2604col_10259.4_2528
Signatures of topological phase transitions in higher Landau levels of HgTe/CdTe quantum wells from an information theory perspective
Calixto, Manuel
Cordero Tejedor, Nicolás A.
Romera, Elvira
Castaños, Octavio
Topological phases
2D Dirac materials
Landau levels
Information theory
We analyze the structure of low energy Hamiltonian eigenstates in zincblende heterostructures (like HgTe/CdTe quantum wells) near the gamma point, under magnetic fields, to characterize topological phase transitions (TPT) under an information-theoretic perspective. Using information markers like entanglement, quantum fluctuations, fidelity susceptibility, participation ration, area in phase space, etc., we realize that higher Landau levels (LL) feel the topological phase transition slightly displaced with regard to the edge state, thus leading to the concept of “higher Landau level
TPT”, as “echoes” of the standard edge state
TPT. We compute the critical magnetic field and the critical HgTe layer thickness at which these information measures of higher Landau levels undergo a structural change.
2023-12-18
2023-12-18
2022-11
info:eu-repo/semantics/article
0378-4371
http://hdl.handle.net/10259/8219
10.1016/j.physa.2022.128057
eng
Physica A: Statistical Mechanics and its Applications. 2022, V. 605, 128057
https://doi.org/10.1016/j.physa.2022.128057
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-097831-B-I00/ES/FENOMENOS CRITICOS, SIMETRIA Y FASES TOPOLOGICAS EN SISTEMAS CUANTICOS/
info:eu-repo/grantAgreement/Junta de Andalucía//UHU-1262561/
info:eu-repo/grantAgreement/Junta de Andalucía//FQM-381/
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
Atribución 4.0 Internacional
Elsevier