Abstract
We study the Josephson-like spin currents between two ferromagnetic metals by deriving the effective action of the junction. A dc spin Josephson current with the full O(3) symmetry is obtained. We also show that a time-independent uniform magnetic field can serve as the source of the ac spin Josephson effect. That is, the spin current in a uniform magnetic field becomes a periodic function of the time with the period proportional to the inverse of the magnitude of the external magnetic field.
| Original language | English |
|---|---|
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 68 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2003 Nov 18 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Quantum dynamics of tunneling between ferromagnets. / Lee, Yu-Li; Lee, Yu Wen.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 18, 18.11.2003.Research output: Contribution to journal › Article
TY - JOUR
T1 - Quantum dynamics of tunneling between ferromagnets
AU - Lee, Yu-Li
AU - Lee, Yu Wen
PY - 2003/11/18
Y1 - 2003/11/18
N2 - We study the Josephson-like spin currents between two ferromagnetic metals by deriving the effective action of the junction. A dc spin Josephson current with the full O(3) symmetry is obtained. We also show that a time-independent uniform magnetic field can serve as the source of the ac spin Josephson effect. That is, the spin current in a uniform magnetic field becomes a periodic function of the time with the period proportional to the inverse of the magnitude of the external magnetic field.
AB - We study the Josephson-like spin currents between two ferromagnetic metals by deriving the effective action of the junction. A dc spin Josephson current with the full O(3) symmetry is obtained. We also show that a time-independent uniform magnetic field can serve as the source of the ac spin Josephson effect. That is, the spin current in a uniform magnetic field becomes a periodic function of the time with the period proportional to the inverse of the magnitude of the external magnetic field.
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UR - http://www.scopus.com/inward/citedby.url?scp=0346434053&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.68.184413
DO - 10.1103/PhysRevB.68.184413
M3 - Article
AN - SCOPUS:0346434053
VL - 68
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 18
ER -