Direct dynamical coupling of spin modes and singlet Josephson supercurrent in ferromagnetic Josephson junctions

I. Petković, M. Aprili, Stewart Barnes, F. Beuneu, S. Maekawa

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Via a direct coupling between the order parameter and the singlet Josephson supercurrent we detect spin-wave resonances and their dispersion in ferromagnetic Josephson junctions in which the usual insulating or metallic barrier is replaced with a weak ferromagnet. The coupling arises within the Fraunhofer interferential description of the Josephson effect because the magnetic layer acts as a time-dependent phase plate. A spin-wave resonance at a frequency ωs implies a dissipation that is reflected as a depression in the current-voltage curve of the Josephson junction when ωs =2eV. We have thereby performed a resonance experiment on only 107 Ni atoms.

Original languageEnglish (US)
Article number220502
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number22
DOIs
StatePublished - Dec 3 2009

Fingerprint

Josephson junctions
Spin waves
magnons
Josephson effect
dissipation
Atoms
Electric potential
electric potential
curves
atoms
Experiments

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Direct dynamical coupling of spin modes and singlet Josephson supercurrent in ferromagnetic Josephson junctions. / Petković, I.; Aprili, M.; Barnes, Stewart; Beuneu, F.; Maekawa, S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 22, 220502, 03.12.2009.

Research output: Contribution to journalArticle

@article{1de860665a3746a48da77290563498ac,
title = "Direct dynamical coupling of spin modes and singlet Josephson supercurrent in ferromagnetic Josephson junctions",
abstract = "Via a direct coupling between the order parameter and the singlet Josephson supercurrent we detect spin-wave resonances and their dispersion in ferromagnetic Josephson junctions in which the usual insulating or metallic barrier is replaced with a weak ferromagnet. The coupling arises within the Fraunhofer interferential description of the Josephson effect because the magnetic layer acts as a time-dependent phase plate. A spin-wave resonance at a frequency ωs implies a dissipation that is reflected as a depression in the current-voltage curve of the Josephson junction when ωs =2eV. We have thereby performed a resonance experiment on only 107 Ni atoms.",
author = "I. Petković and M. Aprili and Stewart Barnes and F. Beuneu and S. Maekawa",
year = "2009",
month = "12",
day = "3",
doi = "10.1103/PhysRevB.80.220502",
language = "English (US)",
volume = "80",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Institute of Physics Publising LLC",
number = "22",

}

TY - JOUR

T1 - Direct dynamical coupling of spin modes and singlet Josephson supercurrent in ferromagnetic Josephson junctions

AU - Petković, I.

AU - Aprili, M.

AU - Barnes, Stewart

AU - Beuneu, F.

AU - Maekawa, S.

PY - 2009/12/3

Y1 - 2009/12/3

N2 - Via a direct coupling between the order parameter and the singlet Josephson supercurrent we detect spin-wave resonances and their dispersion in ferromagnetic Josephson junctions in which the usual insulating or metallic barrier is replaced with a weak ferromagnet. The coupling arises within the Fraunhofer interferential description of the Josephson effect because the magnetic layer acts as a time-dependent phase plate. A spin-wave resonance at a frequency ωs implies a dissipation that is reflected as a depression in the current-voltage curve of the Josephson junction when ωs =2eV. We have thereby performed a resonance experiment on only 107 Ni atoms.

AB - Via a direct coupling between the order parameter and the singlet Josephson supercurrent we detect spin-wave resonances and their dispersion in ferromagnetic Josephson junctions in which the usual insulating or metallic barrier is replaced with a weak ferromagnet. The coupling arises within the Fraunhofer interferential description of the Josephson effect because the magnetic layer acts as a time-dependent phase plate. A spin-wave resonance at a frequency ωs implies a dissipation that is reflected as a depression in the current-voltage curve of the Josephson junction when ωs =2eV. We have thereby performed a resonance experiment on only 107 Ni atoms.

UR - http://www.scopus.com/inward/record.url?scp=77954753830&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954753830&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.80.220502

DO - 10.1103/PhysRevB.80.220502

M3 - Article

AN - SCOPUS:77954753830

VL - 80

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 22

M1 - 220502

ER -