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60 papers · 1 filter
Experimental realization of a relativistic fluxon ratchet
G. Carapella, G. Costabile, R. Latempa +4
We report the observation of the ratchet effect for a relativistic flux quantum trapped in an annular Josephson junction embedded in an inhomogeneous magnetic field. In such a soli…
Low frequency transport measurements in GdSr2RuCu2O8
A. Vecchione, D. Zola, G. Carapella +4
Low frequency transport measurements are performed on GdSrRuCuO pellets. The observed current-voltage curves are qualitatively explained in the framework of a simple ph…
A new method for the estimate of H_0 from quadruply imaged gravitational lens systems
V. F. Cardone, S. Capozziello, V. Re +1
We present a new method to estimate the Hubble constant H_0 from the measured time delays in quadruply imaged gravitational lens systems. We show how it is possible to get an estim…
A Model of Sequence Dependent Protein Diffusion Along Dna
Maria Barbi, Christophe Place, Vladislav Popkov +1
We introduce a probabilistic model for protein sliding motion along DNA during the search of a target sequence. The model accounts for possible effects due to sequence-dependent in…
Zurek-Kibble domain structures: The Dynamics of Spontaneous Vortex formation in Annular Josephson Tunnel Junctions
R. Monaco, J. Mygind, R. Rivers
Phase transitions executed in a finite time show a domain structure with defects, that has been argued by Zurek and Kibble to depend in a characteristic way on the quench rate. In…
Magnon softening and damping in the ferromagnetic manganites due to orbital correlations
S. Krivenko, A. Yaresko, G. Khaliullin +1
We present a theory for spin excitations in ferromagnetic metallic manganites and demonstrate that orbital fluctuations have strong effects on the magnon dynamics in the case these…