The Physics Graduate Program invites everyone to:
Defense of Doctoral Thesis
Graziâni Candiotto
DYNAMIC MODEL FOR CHARGE AND ENERGY TRANSFER IN MOLECULAR SYSTEMS AND ARTIFICIAL NANOSTRUCTURES
Defense Committee:
Prof. Dr. Luis Guilherme de Carvalho Rego – president – (UFSC/FSC)
Prof. Dr. Marlus Koehler – (external member) – UFPR
Prof. Dr. Carlos Renato Rambo – (local member) – UFSC/EEL
Prof. Dr. Ivan Helmuth Bechtold – (membro titular) – UFSC/FSC
Prof. Dr. Lucas Nicolao – (local member) – UFSC/FSC
Date: August 25, 2017 – friday – Times: 1:30pm – Place: Sala 212 – Auditório do Departamento de Física
THE PHYSICS GRADUATE PROGRAM invites everyone to the seminar:
Dirac Electrons in Two Dimensional Crystals 
Sergio E. Ulloa
Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute
Ohio University
Abstract:
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.
Date: August 21, 2017 – (monday) – Place: Sala 212 – Auditótio do Departamento de Física – Time: 10 horas
The Physics Graduate Program invites everyone to:
Defense of Doctoral Thesis
Eduardo Muller dos Santos
INCERTEZA E INFORMAÇÃO QUÂNTICA NO MODELO DE SUPERRADIÂNCIA DE DICKE
Defense Committee:
Prof. Dr. Eduardo Inacio Duzzioni – (president – UFSC/FSC)
Profª. Drª. Liliana Sanz De La Torre – (external member – UFU/IF)
Prof. Dr. Luis Guilherme de Carvalho Rego – (external member – UFSC/FSC)
Prof. Dr. Bruno Gouvêa Taketani – (membro titular – UFSC/FSC)
Prof. Dr. Kahio Tiberio Mazon – (supplementary member – UFSC/FSC)
Date: August 18, 2017 – friday – Times: 3:00 pm – Place: Sala 212 – Auditório do Departamento de Física
