92 citations · 1.3k across the 98 of their papers we have counts for
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Persistent currents in n-fold twisted Moebius strips
E. H. Martins Ferreira, M. C. Nemes, M. D. Sampaio +1
We investigate the influence of the topology on generic features of the persistent current in n-fold twisted Moebius strips formed of quasi one--dimensional mesoscopic rings, both…
Decoherence effects on the tunneling rate of paramagnetic and superparamagnetic particles
E. H. Martins Ferreira, M. C. Nemes, H. -D. Pfannes
We analyze the effects of the environment on the spin tunneling process of paramagnetic and superparamagnetic particles and conclude that the non assisted macroscopic tunneling rat…
Realistic Decoherence Free Subspaces
K. M. Fonseca Romero, S. G. Mokarzel, M. O. Terra Cunha +1
Decoherence free subspaces (DFS) is a theoretical tool towards experimental implementation of quantum information storage and processing. However, they represent an experimental ch…
Mass Scales and Their Relations in Symmetric Quantum Field Theory
S. R. Gobira, M. C. Nemes
We illustrate the importance of mass scales and their relation in the specific case of the linear sigma model within the context of its one loop Ward identities. In the calculation…
Quantum Conductance and Electrical Resistivity
P. R. Silva, Marcos Sampaio, C. Nassif +1
The Landauer formula for quantum conductance, based on the modern paradigm: "conduction is transmission", is generalized to samples of macroscopic size. Two regimes of electrical c…