TY - JOUR
T1 - Superconducting critical field of Nb3Ge1-xSnx pseudobinaries
AU - Alterovitz, Samuel A.
AU - Haugland, Edward J.
AU - Woollam, John A.
AU - Engelhardt, John J.
AU - Webb, George W.
PY - 1981
Y1 - 1981
N2 - Upper critical fields, Hc2(T), and residual resistivities, 0, of Nb3Ge1-xSnx pseudobinaries with 0<~x<~1 produced by chemical vapor deposition were measured in fields up to 140 kG. The upper critical field Hc2(0) exhibits a minimum at x0.4. The temperature dependence of Hc2 for all ternary concentrations follows the theory of dirty type-II superconductors. The coefficient of the electronic specific heat, the band density of states Nb(0), and the electron-phonon coupling parameter are determined as a function of x and 0. Estimated electron-phonon coupling parameters suggest a high Fermi-surface average of McMillan's parameter I2 for Nb3Ge.
AB - Upper critical fields, Hc2(T), and residual resistivities, 0, of Nb3Ge1-xSnx pseudobinaries with 0<~x<~1 produced by chemical vapor deposition were measured in fields up to 140 kG. The upper critical field Hc2(0) exhibits a minimum at x0.4. The temperature dependence of Hc2 for all ternary concentrations follows the theory of dirty type-II superconductors. The coefficient of the electronic specific heat, the band density of states Nb(0), and the electron-phonon coupling parameter are determined as a function of x and 0. Estimated electron-phonon coupling parameters suggest a high Fermi-surface average of McMillan's parameter I2 for Nb3Ge.
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U2 - 10.1103/PhysRevB.23.4485
DO - 10.1103/PhysRevB.23.4485
M3 - Article
AN - SCOPUS:35949020792
VL - 23
SP - 4485
EP - 4492
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 9
ER -