Skip to main content
Article thumbnail
Location of Repository

High frequency relaxation kinetics in metal and high-Tc superconductor nanocontacts

By Illya Kulyk


The presented work deals with an interesting and relatively simple experimental method, called Point Contact Spectroscopy that permits to study the behaviour of quasiparticles (phonons) in conductive solids: their generation, interactions with electrons, disappearance. We could investigate by this technique also more exotic processes for other quasiparticles (conduction electrons), such as their trapping in a semi metal crystal lattice (Sb), the pairing in superconducting solids, and the absorption of phonons by electrons. Point Contact Spectroscopy consists in the creation of a nanocontact (10-100 nm in diameter) between two conductors and in monitoring its response to electromagnetic fields. When kept in liquid helium, an enormous current density in the range of 109 A/cm2 can be created in such a constriction and in these conditions, the contact becomes an instrument for revealing the quantum properties of electrons and phonons.

Topics: Supergeleidend materiaal, Contactstructuren , Contactverschi, relaxatie, Dynamica, Hogetemperatuursupergeleiders, Nanostru; spectrometrie , Elektroncorrelatie; Proefschriften (vorm); supergeleiding; oppervlakken, grenslagen en dunne lagen
Year: 2008
OAI identifier:

Suggested articles


  1. (1990). A method for the determination of the relaxation time of non-equilibrium excitations.
  2. (1989). Bi-Sr-Ca-Cu-O thinfilm energy gap as a function of temperature and force applied to squeezable-electron-tunneling junctions. doi
  3. (1989). Electromagnetic response of contacts with metal-oxide superconductors.
  4. (1988). Electromagnetic response of the contacts with metaloxide superconductors.
  5. (1977). Josephson effect between superconductors in possibly different spin-pairing states. doi
  6. (1990). Laser radiation heat detector with the metal microcontact base.
  7. (1995). Local switching of states in non-homogeneous HTS materials.
  8. (1990). Many thanks to the colleagues of the Nanocontact Laboratory. The collaborative and friendly spirit of the group contributed a lot at all stages of the work.
  9. (1988). Point-contacts from BiCaSrCu2Ox. Physica C, doi
  10. (1978). The response of the metal-YBaCuO ceramics contacts under the high-frequency and optical radiation.
  11. (1991). The studies of IVC of the Josephson transitions of the High-Tc ceramics.
  12. (1988). The study of the High-Tc superconductor by the microcontact
  13. (1991). Thermal conductivity of solids.
  14. (1990). Thermal destruction of the superconducting state in thin films of YBa2Cu3O7-y.

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.