4 papers
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…
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…
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…
Curved graphene: a possible answer to the problem of graphene's diverging magnetic susceptibility
Abdiel de Jesús Espinosa-Champo, Gerardo G. Naumis, Pavel Castro-Villarreal
A study of strongly curved graphene magnetization and magnetic susceptibility is carried out. Through a Dirac model complemented with a tight-binding model analysis, we are able to…