Abstract
Weak localization, fluctuation conductivity, and related problems have been investigated based on a comprehensive set of experiments on transition metal Nb films and wires. The temperature dependence of the inelastic scattering rate 1/ of films with various thicknesses (25 80), estimated from magnetoresistance data above Tc, is well fitted to a function of C0+C1T+C3T3. The coefficient C1 is in excellent quantitative agreement with the theoretical prediction of the electron-electron scattering mechanism for two-dimensional dirty metals. The coefficient C3 shows no thickness dependence and is in semiquantitative agreement with theories of three-dimensional electron-phonon scattering mechanisms. The upper critical field of thin Nb wires with a width of less than 1000 exhibits unconventional temperature dependence close to Tc. We also discuss this behavior.
| Original language | English |
|---|---|
| Pages (from-to) | 118-126 |
| Number of pages | 9 |
| Journal | Physical Review B |
| Volume | 42 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1990 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Weak localization, fluctuation, and superconductivity in thin Nb films and wires. / Hikita, Makoto; Tajima, Yukimichi; Tamamura, Toshiaki; Kurihara, Susumu.
In: Physical Review B, Vol. 42, No. 1, 1990, p. 118-126.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Weak localization, fluctuation, and superconductivity in thin Nb films and wires
AU - Hikita, Makoto
AU - Tajima, Yukimichi
AU - Tamamura, Toshiaki
AU - Kurihara, Susumu
PY - 1990
Y1 - 1990
N2 - Weak localization, fluctuation conductivity, and related problems have been investigated based on a comprehensive set of experiments on transition metal Nb films and wires. The temperature dependence of the inelastic scattering rate 1/ of films with various thicknesses (25 80), estimated from magnetoresistance data above Tc, is well fitted to a function of C0+C1T+C3T3. The coefficient C1 is in excellent quantitative agreement with the theoretical prediction of the electron-electron scattering mechanism for two-dimensional dirty metals. The coefficient C3 shows no thickness dependence and is in semiquantitative agreement with theories of three-dimensional electron-phonon scattering mechanisms. The upper critical field of thin Nb wires with a width of less than 1000 exhibits unconventional temperature dependence close to Tc. We also discuss this behavior.
AB - Weak localization, fluctuation conductivity, and related problems have been investigated based on a comprehensive set of experiments on transition metal Nb films and wires. The temperature dependence of the inelastic scattering rate 1/ of films with various thicknesses (25 80), estimated from magnetoresistance data above Tc, is well fitted to a function of C0+C1T+C3T3. The coefficient C1 is in excellent quantitative agreement with the theoretical prediction of the electron-electron scattering mechanism for two-dimensional dirty metals. The coefficient C3 shows no thickness dependence and is in semiquantitative agreement with theories of three-dimensional electron-phonon scattering mechanisms. The upper critical field of thin Nb wires with a width of less than 1000 exhibits unconventional temperature dependence close to Tc. We also discuss this behavior.
UR - http://www.scopus.com/inward/record.url?scp=0006379040&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0006379040&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.42.118
DO - 10.1103/PhysRevB.42.118
M3 - Article
AN - SCOPUS:0006379040
VL - 42
SP - 118
EP - 126
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 1
ER -