Hammer, J. C., Cuevas, Juan Carlos, Bergeret, F. S., Belzig, Wolfgang
We present a theoretical study of the density of states and supercurrent in diffusive superconductor-normal metal-superconductor (SNS) junctions. In particular, we study the influence on these two...
Scheer, Elke, Konrad, Patrick, Bacca, Cecile, Mayer-Gindner, Andreas, Löhneysen, Hilbert Von, Häfner, Michael, ...
We report low-temperature measurements of the electrical transport properties of atomic contacts of the superconducting metal zinc, arranged with lithographically fabricated mechanically controllable...
Structure and conductance histogram of atomic-sized Au contacts (2005)
Dreher, Markus, Pauly, Fabian, Heurich, Jan, Cuevas, Juan Carlos, Scheer, Elke, Nielaba, Peter
Many experiments have shown that the conductance histograms of metallic atomic-sized contacts exhibit a peak structure, which is characteristic of the corresponding material. The origin of these...
Conduction channels of one-atom zinc contacts (2004)
Häfner, Michael, Konrad, Patrick, Pauly, Fabian, Cuevas, Juan Carlos, Scheer, Elke
We have determined the transmission coefficients of atomic-sized Zn contacts using a different type of breakjunction, which contains a whisker as a central bridge. We find that in the last...
Dc transport in superconducting point contacts : a full-counting-statistics view (2004)
Cuevas, Juan Carlos, Belzig, Wolfgang
We present a comprehensive theoretical analysis of the dc transport properties of superconducting point contacts. We determine the full-counting statistics for these junctions, which allows us to...
Full counting statistics of multiple Andreev reflections (2003)
Cuevas, Juan Carlos, Belzig, Wolfgang
We derive the full distribution of transmitted particles through a superconducting point contact of arbitrary transparency under voltage bias. The charge transport is dominated by multiple Andreev...
Conduction channels of superconducting quantum point contacts (2000)
Scheer, Elke, Cuevas, Juan Carlos, Levy Yeyati, Alfredo, Martin-Rodero, Alvaro, Joyez, Philippe, Devoret, Michel H., ...
Atomic quantum point contacts accommodate a small number of conduction channels. Their number N and transmission coefficients {T_n} can be determined by analyzing the subgap structure due to multiple...
The signature of chemical valence in the electrical conduction through a single-atom contact (1998)
Scheer, Elke, Agraït, Nicolás, Cuevas, Juan Carlos, Yeyati, Alfredo Levy, Ludoph, Bas, Martín-Rodero, Alvaro, ...
Fabrication of structures at the atomic scale is now possible using state-of-the-art techniques for manipulating individual atoms, and it may become possible to design electrical circuits atom by...