RT info:eu-repo/semantics/article
T1 Signatures of topological phase transitions in higher Landau levels of HgTe/CdTe quantum wells from an information theory perspective
A1 Calixto, Manuel
A1 Cordero Tejedor, Nicolás A.
A1 Romera, Elvira
A1 Castaños, Octavio
K1 Topological phases
K1 2D Dirac materials
K1 Landau levels
K1 Information theory
K1 Física
K1 Physics
AB 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.
PB Elsevier
SN 0378-4371
YR 2022
FD 2022-11
LK http://hdl.handle.net/10259/8219
UL http://hdl.handle.net/10259/8219
LA eng
NO We thank the support of the Spanish MICINN through the project PGC2018-097831-B-I00 and Junta de Andalucía, Spain through the projects UHU-1262561 and FQM-381. Funding for open access charge: Universidad de Granada / CBUA .
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024