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Magnetic phase transitions protected by topological quantum geometry transitions: effects of electron-electron interactions in the Creutz ladder system
Abdiel de Jesús Espinosa-Champo, Gerardo G. Naumis
The interplay between electronic correlations and band topology is a central theme in modern condensed matter physics. In this work, we investigate the effects of on-site Hubbard i…
Electronic structure and optical signatures of highly-doped graphene
Saúl Antonio Herrera-González, Guillermo Parra-Martínez, Francisco Guinea +3
Heavily doping graphene by intercalation can raise its Fermi level near an extended van Hove singularity, potentially inducing correlated electronic phases. Intercalation also modi…
Hyperbolic Plasmon dispersion and Optical Conductivity of Holey Graphene: signatures of flat-bands
Abdiel de Jesús Espinosa-Champo, Gerardo G. Naumis
Holey graphene (HG) is a novel two-dimensional (2D) material that has attracted considerable attention due to its remarkable electrical, thermal, and mechanical properties. The rec…
Topological phase diagram of twisted bilayer graphene as a function of the twist angle
Leonardo A. Navarro-Labastida, Pierre A. Pantaleon, Francisco Guinea +1
Twisted bilayer graphene (TBG) hosts a rich landscape of electronic phases arising from the interplay between strong electron-electron interactions and nontrivial band topology. Wh…
Interaction-driven charge textures and unconventional superconductivity in strained monolayer graphene
Elias Andrade, Alejandro Jimeno-Pozo, Pierre A. Pantaleon +2
Two-dimensional systems with flat bands support correlated phases such as superconductivity. While twisted moiré systems, like twisted bilayer graphene, have revealed such states,…
When Adiabaticity Is Not Enough to Study Topological Phases in Solid-State Physics: Comparing the Berry and Aharonov-Anandan Phases in 2D Materials
Abdiel de Jesús Espinosa-Champo, Alejandro Kunold, Gerardo G. Naumis
Topological phases emerge as the parameters of a quantum system vary with time. Under the adiabatic approximation, the time dependence can be eliminated, allowing the Berry topolog…