Banca de DEFESA: CARLENE PAULA SILVA DE FARIAS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : CARLENE PAULA SILVA DE FARIAS
DATA : 10/04/2017
HORA: 10:00
LOCAL: Auditório do DFTE
TÍTULO:

Competing Orders in Strongly Correlated Systems: from Ordered Magnetism to Spin Liquid Phases.

PALAVRAS-CHAVES:

BCT lattice, Antiferromagnetism, Spin Liquid, Hidden Order, Raman Scattering, Point Group Symmetry.

PÁGINAS: 125
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Física
SUBÁREA: Física da Matéria Condensada
RESUMO:

The main objective of this thesis is to investigate the competing ordered phases in the metallic heavy fermion compound URu₂Si_2,  which displays a body-centered tetragonal lattice. We first provide a study case of the competition between antiferromagnetic (AF) and spin liquid (SL) phases. The antiferromagnetic state is study with spin-wave theory. Whereas the spin liquid analysis is carry out in an algebraic spin liquid representation. In the second part, we describe an effective theory for Raman scattering experiments at these particularly phases. We provide insight about the hidden order phase displayed by the heavy fermion compound URu₂ Si₂ .

MEMBROS DA BANCA:
Presidente - 404927 - ALVARO FERRAZ FILHO
Externo à Instituição - PASCOAL PAGLIUSO - UNICAMP
Interno - 2313663 - RODRIGO GONCALVES PEREIRA
Externo à Instituição - SERGIO GARCIA MAGALHÃES - UFRGS
Interno - 2195232 - TOMMASO MACRI