RT Dissertation/Thesis
T1 Topological electronic phases in graphene
A1 Lado Villanueva, Jose Luis
K1 graphene
K1 topological insulator
K1 topological superconductor
K1 proximity effect
AB Graphene is a two dimensional material made of single layer of carbon atoms arranginginto a honeycomb lattice. It can be synthesized by variety of methods as exfoliation,chemical vapor deposition or organic polymerization. Its electronic properties are not theones of an insulator nor a metal, being usually known as a zero gap semiconductor.Electrons in graphene behave as massless Dirac fermions, having a zero effective mass.The Dirac equation that governs electrons turns graphene into a material that can easilydevelop topological states due to Berry phase effects of the Dirac points. Such topologicalstates of matter are characterized for having properties which are independent on thedefects and imperfections that the material might have. The two dimensional nature ofgraphene makes it specially suitable to inherit properties from other materials by proximityeffect, as superconductivity or magnetism. In this thesis we will explore by means oftheoretical techniques how graphene can show topological insulating states by combinationof magnetic fields, electron-electron interaction, spin orbit coupling, exchange andsuperconducting proximity effects.
YR 2016
FD 2016
LK http://hdl.handle.net/10347/14927
UL http://hdl.handle.net/10347/14927
LA eng
DS Minerva
RD 22 abr 2026