TY - JOUR
T1 - Magnetization noise in magnetoelectronic nanostructures
AU - Foros, Jørn
AU - Brataas, Arne
AU - Tserkovnyak, Yaroslav
AU - Bauer, Gerrit E.W.
PY - 2005/7/1
Y1 - 2005/7/1
N2 - By scattering theory we show that spin current noise in normal electric conductors in contact with nanoscale ferromagnets increases the magnetization noise by means of a fluctuating spin-transfer torque. Johnson-Nyquist noise in the spin current is related to the increased Gilbert damping due to spin pumping, in accordance with the fluctuation-dissipation theorem. Spin current shot noise in the presence of an applied bias is the dominant contribution to the magnetization noise at low temperatures.
AB - By scattering theory we show that spin current noise in normal electric conductors in contact with nanoscale ferromagnets increases the magnetization noise by means of a fluctuating spin-transfer torque. Johnson-Nyquist noise in the spin current is related to the increased Gilbert damping due to spin pumping, in accordance with the fluctuation-dissipation theorem. Spin current shot noise in the presence of an applied bias is the dominant contribution to the magnetization noise at low temperatures.
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U2 - 10.1103/PhysRevLett.95.016601
DO - 10.1103/PhysRevLett.95.016601
M3 - Article
AN - SCOPUS:27144529043
SN - 0031-9007
VL - 95
JO - Physical Review Letters
JF - Physical Review Letters
IS - 1
M1 - 016601
ER -