Electrical transport and superconducting properties of thin tin-copper films

B. Shinozaki, K. Omata, Kazumasa Yamada, T. Kawaguti, Y. Fujimori, T. Aomine

Research output: Contribution to journalArticle

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Abstract

For tin-10 at% copper and tin films in a wide range of normal state sheet resistances, R□N, the electrical resistance R(T) and the excess conductance σ′(T,H) due to superconducting fluctuations have been measured. The data on σ′(T,0) near Tc have been analyzed by the sum of Aslamazov-Larkin and Maki-Thompson terms. It has been found that there is a large difference of δ (pair breaking parameter in the MT term) between the tin-copper and tin films. The difference of R□N-dependence of δ between the two systems can be explained in terms of the contribution δe-p = πℏ/8kBe-p due to the electron-phonon inelastic scattering, by employing Thouless theory for the rate 1/τe-p and also the R□N-dependence of the electrical transport properties for each system. An agreement between the experiment and theory suggests that the rate 1/τe-p for disordered thin-films is determined by not only electron mean free path ℓ but also resistivity ratio Γ (= ρ300 K4.2 K).

Original languageEnglish
Pages (from-to)49-56
Number of pages8
JournalPhysica C: Superconductivity and its applications
Volume296
Issue number1-2
DOIs
Publication statusPublished - Feb 10 1998

Fingerprint

Tin
Copper
tin
transport properties
copper
Inelastic scattering
Phonon scattering
Acoustic impedance
Electrons
Sheet resistance
electrical resistance
mean free path
Transport properties
inelastic scattering
electrons
Thin films
electrical resistivity
thin films
Experiments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Electrical transport and superconducting properties of thin tin-copper films. / Shinozaki, B.; Omata, K.; Yamada, Kazumasa; Kawaguti, T.; Fujimori, Y.; Aomine, T.

In: Physica C: Superconductivity and its applications, Vol. 296, No. 1-2, 10.02.1998, p. 49-56.

Research output: Contribution to journalArticle

Shinozaki, B. ; Omata, K. ; Yamada, Kazumasa ; Kawaguti, T. ; Fujimori, Y. ; Aomine, T. / Electrical transport and superconducting properties of thin tin-copper films. In: Physica C: Superconductivity and its applications. 1998 ; Vol. 296, No. 1-2. pp. 49-56.
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