Classical mesoscopic effect in the resistance of point contacts

Автор(и)

  • Yu. A. Kolesnichenko B. I. Verkin Institute for Low Temperature Physics and Engineering of National Academy of Science of Ukraine, 47 Lenin Ave., 310164 Kharkov, Ukraine
  • A. N. Omelyanchouk B. I. Verkin Institute for Low Temperature Physics and Engineering of National Academy of Science of Ukraine, 47 Lenin Ave., 310164 Kharkov, Ukraine
  • A. I. Yanson B. I. Verkin Institute for Low Temperature Physics and Engineering of National Academy of Science of Ukraine, 47 Lenin Ave., 310164 Kharkov, Ukraine
  • N. van der Post Kamerlingh Onnes Laboratorium, Leiden University, P.O. Box 9506, 2300 RA Leiden, The Netherlands

DOI:

https://doi.org/10.1063/1.593509

Ключові слова:

PACS: 72.15.Qm, 72.10.Fk, 73.40.Jn

Анотація

The mesoscopic effect of the dependence of the point-contact conductance on the spatial distribution of the impurities is theoretically studied. It is shown that the resistance dependence on the diameter d is not only determined by the electron mean free path li , but also by the average distance between the impurities. In the case of two types of impurities with different concentrations the mesoscopic effect is predicted for a dirty point contact (d >> li) due to the scattering at specific (e.g., magnetic) impurities with a low concentration. Such contacts were numerically modeled for random distributions of the two types of impurities.

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Опубліковано

1997-12-10

Як цитувати

(1)
Kolesnichenko, Y. A.; Omelyanchouk, A. N.; Yanson, A. I.; Post, N. van der. Classical Mesoscopic Effect in the Resistance of Point Contacts. Fiz. Nizk. Temp. 1997, 23, 1309-1314.

Номер

Том 23 № 12 (1997)

Розділ

Низькоpозмірні та невпорядковані системи

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