WebElectron transport in granular metals is a subject of intense theoretical and experimental research. . The interest is motivated by the fact that granular metals represent a unique tunable system that captures all the essential features of general disordered systems and allows for the study the effects of interference of strong Coulomb interaction and disorder. Web1 aug. 1999 · Theory of hopping conductivity on spherical metal grains below the percolation threshold in a dielectric matrix has been developed. Screening of the potential beyond …
Hoon Ryu - Principal Researcher - Korea Institute of Science and ...
Web1 mrt. 2001 · In hopping conductivity, granular metals resemble doped semiconductors [8]. However, important distinctions emerge from the fact that the problem contains a new … Web1 nov. 2024 · The crossover between tunnel and hopping conductivity in granulated films in temperature range from 20 °C to 100 °C was observed. Abstract The conductivity of thin … dental one and associates
Resistivity dependence of magnetoresistance in Co/ZnO films
WebElectrical conduction in granular metals is simulated by mapping the hopping conductance between pairs of metal grains onto a simple cubic lattice with bonds between neighbors. By considering a log-normal distribution of grain sizes and the effect of disorder potential, the numerically calculated network conductance exhibit clear deviation from … WebThey also observed that the conduction between polymer chains is the limiting factor in conduction and not the conductivity within a single chain. For polymers with conductivity more than 50 S/cm variable range hopping (VRH) behaviour was observed, and for those with less than 5 S/cm nearest distance hopping (NDH) and VRH behaviour was … Web6 jan. 2014 · Sheng P, Abeles B, Arie Y: Hopping conductivity in granular metals. Phys Rev Lett 1973, 31: 44–47. 10.1103/PhysRevLett.31.44. Article Google Scholar Mitani S, Takahashi S, Takanashi K, Yakushiji K, Maekawa S, Fujimori H: Enhanced magnetoresistance in insulating granular systems: evidence for higher-order tunneling. dental one waterford mi