Controlled electromigration of thin Pb films started from the normal and from the superconducting state

@article{Staudt2017ControlledEO,
  title={Controlled electromigration of thin Pb films started from the normal and from the superconducting state},
  author={Dominik Staudt and Regina Hoffmann-Vogel},
  journal={Journal of Physics D},
  year={2017},
  volume={50},
  pages={185301}
}
We have investigated the electromigration of thin Pb films with a weak link, performing the main sample fabrication steps in ultra-high vacuum and avoiding organic chemicals. In the normal state, upon a current flow, joule heating leads to an increased temperature and electromigration proceeds due to thermal activation. Cyclic controlled electromigration at 300 K and at 77 K can be well-described by a model used previously where the feed resistance and the power dissipated in the contact remain… 

Figures from this paper

Electromigration in the dissipative state of high-temperature superconducting bridges
The current stimulated atomic diffusion in YBa2Cu3O7–δ superconducting bridges is investigated. A superconductor to insulator transition can be induced by the current controlled electromigration
Nano-engineering superconducting junctions by atomic migration
Superconductivity is a fascinating quantum phenomenon able to manifest itself at truly macroscopic scale. From magnetic levitation to lossless power cables, from magnetic resonance imaging to plasma

References

SHOWING 1-10 OF 12 REFERENCES
Resistance-voltage dependence of nanojunctions during electromigration in ultrahigh vacuum
The electrical resistance $R$ of metallic nanocontacts subjected to controlled cyclic electromigration in ultrahigh vacuum has been investigated in situ as a function of applied voltage $V$. For
Structure and local charging of electromigrated Au nanocontacts.
We study the structure and the electronic properties of Au nanocontacts created by controlled electromigration of thin film devices, a method frequently used to contact molecules. In contrast to
Controlled electromigration and oxidation of free-standing copper wires
We have studied controlled electromigration (EM) in free-standing copper wires. Besides electrical characterization by voltage–current measurements, structural analyses have been performed by means
Conduction Channel Transmissions of Atomic-Size Aluminum Contacts
The isV , td curves present a series of sharp current steps at voltage values V › 2Dyne, where n is a positive integer and D is the superconducting gap. The well-known process of single quasiparticle
Fabrication of nanometer-spaced superconducting Pb electrodes
We report the fabrication of superconducting Pb electrodes with nanometer-sized separation by using the electromigration technique. Below the superconducting transition temperature, the electrodes
Temperature control of electromigration to form gold nanogap junctions
Controlled electromigration of gold nanowires of different cross-sectional areas to form nanogap junctions is studied using a feedback method. A linear correlation between the cross-sectional area of
Controlled fabrication of nanogaps in ambient environment for molecular electronics
We have developed a controlled and highly reproducible method of making nanometer-spaced electrodes using electromigration in ambient lab conditions. This advance will make feasible single molecule
A current-driven single-atom memory.
TLDR
It is shown that a metallic atomic-scale contact can be operated as a reliable and fatigue-resistant two-terminal switch and evidence is provided that the switching process is caused by the reversible rearrangement of single atoms.
Nanometer gaps by feedback-controlled electromigration
  • V. Shih, Si-Yang Zheng, A. Chang, Y. Tai
  • Engineering
    TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (Cat. No.03TH8664)
  • 2003
Nanometer-sized gap (or nanogap) is one of the most fundamental devices in the nanotechnology field. Park et. al., first proposed the open-circuit electromigration method to fabricate nanogaps, but
Conductance of gold nanojunctions thinned by electromigration
We investigate nanocontact formation by thermally assisted electromigration of gold nanowires. An automatic cycling process allows us to follow a line of constant power dissipated at the nanocontact
...
...