Spin dynamics in a superconductor-ferromagnet proximity system

C. Bell; S. Milikisyants; M. Huber; J. Aarts; Chris Bell

doi:10.1103/PhysRevLett.100.047002

Spin dynamics in a superconductor-ferromagnet proximity system

C. Bell^*, S. Milikisyants, M. Huber, J. Aarts, Chris Bell

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

86 Citations (Scopus)

Abstract

The ferromagnetic resonance of thin sputtered Ni(80)Fe(20) films grown on Nb is measured. By varying the temperature and the thickness of the Nb the role of the superconductivity on the whole ferromagnetic layer in these heterostructures is explored. The change in the spin transport properties below the superconducting transition of the Nb is found to manifest itself in the Ni(80)Fe(20) layer by a sharpening in the resonance of the ferromagnet, or a decrease in the effective Gilbert damping coefficient, showing that the superconductivity affects the macrospin of the ferromagnetic layer. We interpret this in terms of the spin-pumping model.

Original language	English
Article number	047002
Number of pages	4
Journal	Physical Review Letters
Volume	100
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.100.047002
Publication status	Published - 1 Feb 2008

Keywords

ANDREEV REFLECTION
RESONANCE LINEWIDTH
FILMS
HETEROSTRUCTURES
JUNCTIONS
NM
TA
CU
PD

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title = "Spin dynamics in a superconductor-ferromagnet proximity system",

abstract = "The ferromagnetic resonance of thin sputtered Ni(80)Fe(20) films grown on Nb is measured. By varying the temperature and the thickness of the Nb the role of the superconductivity on the whole ferromagnetic layer in these heterostructures is explored. The change in the spin transport properties below the superconducting transition of the Nb is found to manifest itself in the Ni(80)Fe(20) layer by a sharpening in the resonance of the ferromagnet, or a decrease in the effective Gilbert damping coefficient, showing that the superconductivity affects the macrospin of the ferromagnetic layer. We interpret this in terms of the spin-pumping model.",

keywords = "ANDREEV REFLECTION, RESONANCE LINEWIDTH, FILMS, HETEROSTRUCTURES, JUNCTIONS, NM, TA, CU, PD",

author = "C. Bell and S. Milikisyants and M. Huber and J. Aarts and Chris Bell",

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AU - Bell, C.

AU - Milikisyants, S.

AU - Huber, M.

AU - Aarts, J.

AU - Bell, Chris

PY - 2008/2/1

Y1 - 2008/2/1

N2 - The ferromagnetic resonance of thin sputtered Ni(80)Fe(20) films grown on Nb is measured. By varying the temperature and the thickness of the Nb the role of the superconductivity on the whole ferromagnetic layer in these heterostructures is explored. The change in the spin transport properties below the superconducting transition of the Nb is found to manifest itself in the Ni(80)Fe(20) layer by a sharpening in the resonance of the ferromagnet, or a decrease in the effective Gilbert damping coefficient, showing that the superconductivity affects the macrospin of the ferromagnetic layer. We interpret this in terms of the spin-pumping model.

AB - The ferromagnetic resonance of thin sputtered Ni(80)Fe(20) films grown on Nb is measured. By varying the temperature and the thickness of the Nb the role of the superconductivity on the whole ferromagnetic layer in these heterostructures is explored. The change in the spin transport properties below the superconducting transition of the Nb is found to manifest itself in the Ni(80)Fe(20) layer by a sharpening in the resonance of the ferromagnet, or a decrease in the effective Gilbert damping coefficient, showing that the superconductivity affects the macrospin of the ferromagnetic layer. We interpret this in terms of the spin-pumping model.

KW - ANDREEV REFLECTION

KW - RESONANCE LINEWIDTH

KW - FILMS

KW - HETEROSTRUCTURES

KW - JUNCTIONS

KW - NM

KW - TA

KW - CU

KW - PD

U2 - 10.1103/PhysRevLett.100.047002

DO - 10.1103/PhysRevLett.100.047002

M3 - Article (Academic Journal)

C2 - 18352320

SN - 0031-9007

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 047002

ER -

Spin dynamics in a superconductor-ferromagnet proximity system

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