Unconventional Superconductivity
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Doping phase diagrams of the heavy fermions Ce2MIn8 (M = Rh, IR) / Efeitos da substituição quimica nos diagramas de fases dos fermions pesados Ce2MIn8 (M = Rh e Ir)
This thesis describes the investigation of the physical properties of the (Cd, Sn, Ga)-doped Ce2MIn8 (M = Rh, Ir) intermetallic compounds. Temperature dependent magnetic susceptibility, heat capacity and electrical resistivity measurements were performed to characterize the macroscopic properties of the synthesized compounds. X-ray powder diffraction were us
Publicado em: 2009
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2. PRESSURE-TEMPERATURE-COMPOSITION PHASE DIAGRAM OF THE HEAVY FERMION COMPOUND CE2RH(1−X)IR(X)IN8 / DIAGRAMA DE FASES PRESSÃO-COMPOSIÇÃO-TEMPERATURA DO COMPOSTO FÉRMION PESADO CE2RH(1−X)IR(X)IN8
Heavy fermion compounds behave differently from typical metals at low temperatures, where the phenomena that arise due to the correlation between conduction electrons and the f ions of the lattice become evident. An increased effective electronic mass that can reach values as high as hundreds of times the free electron mass and the coexistence of magnetic or
Publicado em: 2006
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3. Electronic structure and aspects of unconventional superconductivity in Na xCoO2.yH2O
We examine the electronic structure of Na xCoO2.yH2O within the local density approximation. The parametrization of the band which forms the largest hole-Fermi surface centered at gamma shows significant deviations from what is frequently assumed in recent sophisticated theoretical studies. In particular, the commonly used nearest neighbor approaches in the
Brazilian Journal of Physics. Publicado em: 2003-12
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4. VORTEX STATES IN UNCONVENTIONAL SUPERCONDUCTORS / ESTADOS DE VORTICES EM SUPERCONDUTORES NAO-CONVENCIONAIS
The theory of Bardeen, Cooper and Schrieffer (BCS) had great success in explaining most properties of superconducting materials. These materials, where BCS applies, are denominated conventional superconductors. the experimental evidence of unconventional superconductivity in several materials reopened discussions about the phenomenon. While, in conventional
Publicado em: 2002