TY - JOUR
T1 - Supercurrent pumping in Josephson junctions with a half-metallic ferromagnet
AU - Takahashi, S.
AU - Hikino, S.
AU - Mori, M.
AU - Martinek, J.
AU - Maekawa, S.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/8/3
Y1 - 2007/8/3
N2 - A Josephson current through a half-metallic ferromagnet between two conventional superconductors is theoretically studied. The spin dynamics such as magnon excitation plays a crucial role not only for the conversion between spin-singlet and spin-triplet pairs but also for the formation of the composite state of a triplet Cooper pair and magnon, by which the Josephson current flows between the superconductors. We propose the supercurrent pumping driven by the coherent precession of the magnetization by tuning the microwave frequency to the ferromagnetic resonance frequency in a ferromagnetic Josephson junction.
AB - A Josephson current through a half-metallic ferromagnet between two conventional superconductors is theoretically studied. The spin dynamics such as magnon excitation plays a crucial role not only for the conversion between spin-singlet and spin-triplet pairs but also for the formation of the composite state of a triplet Cooper pair and magnon, by which the Josephson current flows between the superconductors. We propose the supercurrent pumping driven by the coherent precession of the magnetization by tuning the microwave frequency to the ferromagnetic resonance frequency in a ferromagnetic Josephson junction.
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U2 - 10.1103/PhysRevLett.99.057003
DO - 10.1103/PhysRevLett.99.057003
M3 - Article
C2 - 17930781
AN - SCOPUS:34547662847
VL - 99
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 5
M1 - 057003
ER -