TY - JOUR
T1 - Theory of Josephson effects in iron-based multi-gap superconductor junctions
AU - Ota, Y.
AU - Machida, M.
AU - Koyama, T.
PY - 2010
Y1 - 2010
N2 - We revisit the theory for Josephson effects in Josephson junctions with multiple tunneling channels, which can be realized when multi-gap superconductors, e.g., iron-based superconductors or MgB2 are employed as the electrodes. We mainly re-examine a hetero (multi-band) superconductor- insulator-(single-band)superconductor junction. Deriving an effective Lagrangian density based on the time-dependent Ginzburg-Landau model, we discuss how the relative fluctuations between multiple gaps (i.e., Leggett's excitation modes) and the pairing symmetry modify the Shapiro steps.
AB - We revisit the theory for Josephson effects in Josephson junctions with multiple tunneling channels, which can be realized when multi-gap superconductors, e.g., iron-based superconductors or MgB2 are employed as the electrodes. We mainly re-examine a hetero (multi-band) superconductor- insulator-(single-band)superconductor junction. Deriving an effective Lagrangian density based on the time-dependent Ginzburg-Landau model, we discuss how the relative fluctuations between multiple gaps (i.e., Leggett's excitation modes) and the pairing symmetry modify the Shapiro steps.
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U2 - 10.1088/1742-6596/248/1/012040
DO - 10.1088/1742-6596/248/1/012040
M3 - Article
AN - SCOPUS:78651112162
VL - 248
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
M1 - 012040
ER -