El programa de Posgrado en Fisica invita a todos para la:

 Sustentación de Tesis

Graziâni Candiotto

MODELO DINÂMICO PARA TRANSFERÊNCIA DE CARGA E ENERGIA EM SISTEMAS MOLECULARES E NANOESTRUTURAS ARTIFICIAIS

Jurados:

Prof. Dr. Luis Guilherme de Carvalho Rego – (presidente) – UFSC/FSC

Prof. Dr. Marlus Koehler – (miembro externo) – UFPR

Prof. Dr. Carlos Renato Rambo – (miembro titular) – UFSC/EEL

Prof. Dr. Ivan Helmuth Bechtold – (membro titular) – UFSC/FSC

Prof. Dr. Lucas Nicolao – (miembro titular) – UFSC/FSC

Fecha: 25 de agosto de 2017 – viernes – Horario: 1:30pm – Lugar: Sala 212 – Auditorio del Departamento de Física

EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:

  Dirac Electrons in Two Dimensional Crystals  

Sergio E. Ulloa

Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute

Ohio University

Resumen:

Graphene, a monoatomic layer of carbon, is perhaps the simplest and most easily available material where electrons behave as massless Dirac particles.  Apart from its many promising technological applications, the study of graphene (and other layered materials) has opened a number of interesting theoretical questions:  the microscopic crystalline structure requires an additional degree of freedom (the pseudo spin) that gives rise to effects such as the Klein paradox or Veselago electron lenses.

This relativistic dynamics is further emphasized by the presence of an interesting relativistic effect: the spin-orbit interaction (SOI), which is present in materials that lack inversion symmetry in the lattice structure or arises from external or interfacial fields that break spatial symmetries. Although SOI is weak in natural graphene, it can be enhanced by local hybridizations with impurities by manipulation of substrates or applied gates. Moreover, the effective exchange interactions between magnetic impurities in this and related 2D materials exhibit interesting behavior.

In this talk, I will present our studies of electronic transport and Kondo screening in graphene, as well as the role of intrinsic SOI in transition metal dichalcogenides in mediating RKKY interactions.

Fecha: 21 de agosto de 2017- (lunes) – Lugar: Sala 212  –  Auditorio del Departamento de Física – Horário: 10 horas

El programa de Posgrado en Fisica invita a todos para la:

 Sustentación de Tesis

Eduardo Muller dos Santos

INCERTEZA E INFORMAÇÃO QUÂNTICA NO MODELO DE SUPERRADIÂNCIA DE DICKE

Jurados:

Prof. Dr. Eduardo Inacio Duzzioni – (presidente – UFSC/FSC)

Profª. Drª. Liliana Sanz De La Torre – (miembro externo – UFU/IF)

Prof. Dr. Luis Guilherme de Carvalho Rego – (miembro externo- UFSC/FSC)

Prof. Dr. Bruno Gouvêa Taketani – (membro titular- UFSC/FSC)

Prof. Dr. Kahio Tiberio Mazon – (miembro suplente – UFSC/FSC)

Fecha: 18 de agosto de 2017 – viernes – Horario: 3:00 pm – Lugar: Sala 212 – Auditorio del Departamento de Física