Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

908
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
908
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

998
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
998
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.1K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the...
1.1K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

1.3K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
1.3K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

957
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
957
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

1.7K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
1.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Magnetization dynamics in magnetically uncoupled and coupled nanostructures.

Nanotechnology·2026
Same author

Surface magnon-polaritons in a trilayer system of graphene/gyromagnetic medium/graphene with a perpendicularly applied magnetic field.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same author

Curvilinear Magnonic Crystal Based on 3D Hierarchical Nanotemplates.

Nano letters·2026
Same author

Magnon-Magnon Interaction Induced by Dynamic Coupling in a Hybrid Magnonic Crystal.

ACS applied electronic materials·2026
Same author

Interplay of geometry and magnetic coupling in ferromagnetic nanorings.

Nanoscale·2025
Same author

2025 roadmap on 3D nanomagnetism.

Journal of physics. Condensed matter : an Institute of Physics journal·2024

Related Experiment Video

Updated: Jun 23, 2025

Iron Nanowire Fabrication by Nano-Porous Anodized Aluminum and its Characterization
07:14

Iron Nanowire Fabrication by Nano-Porous Anodized Aluminum and its Characterization

Published on: October 6, 2019

8.3K

Collective spin waves in RKKY interlayer-coupled Ni80Fe20/Ru/Ni80Fe20nanowire arrays.

Adekunle O Adeyeye1,2, Bushra Hussain3, Michael G Cottam4

  • 1Department of Physics, Durham University, South Rd, DH1 3LE Durham, United Kingdom.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|June 17, 2024
PubMed
Summary

We investigated collective spin waves in multilayer nanowires. The study reveals that Ruderman-Kittel-Kasuya-Yosida interlayer coupling and inter-nanowire interactions influence magnonic bandwidths.

Keywords:
Brillouin light scatteringRKKYinterlayer exchange couplingmagnetic nanowiresspin dynamicsspin waves

More Related Videos

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.1K
Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

15.0K

Related Experiment Videos

Last Updated: Jun 23, 2025

Iron Nanowire Fabrication by Nano-Porous Anodized Aluminum and its Characterization
07:14

Iron Nanowire Fabrication by Nano-Porous Anodized Aluminum and its Characterization

Published on: October 6, 2019

8.3K
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
07:44

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

Published on: April 28, 2016

15.1K
Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

15.0K

Area of Science:

  • Condensed matter physics
  • Materials science
  • Nanotechnology

Background:

  • Understanding collective spin wave dynamics in magnetic nanostructures is crucial for developing advanced spintronic devices.
  • Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling mediates magnetic interactions in layered systems.
  • Nanowire arrays offer unique platforms for exploring spin wave propagation and interactions.

Purpose of the Study:

  • To comprehensively investigate collective spin waves in Ruderman-Kittel-Kasuya-Yosida (RKKY) interlayer-coupled Ni80Fe20/Ru/Ni80Fe20 nanowire arrays.
  • To analyze the field- and wavevector-dependences of spin-wave frequency spectra.
  • To elucidate the contributions of interlayer and inter-nanowire interactions to spin wave behavior.

Main Methods:

  • Utilizing Brillouin light scattering (BLS) spectroscopy to probe spin wave excitations.
  • Fabricating multilayer Ni80Fe20/Ru/Ni80Fe20 nanowire arrays with controlled layer thicknesses.
  • Applying a microscopic Hamiltonian-based method for data analysis and theoretical interpretation.

Main Results:

  • Observed the propagation of Bloch-type collective spin waves in the nanowire arrays.
  • Characterized distinct magnonic bandwidths arising from the interplay of magnetic interactions.
  • Quantified the influence of RKKY interlayer coupling and inter-nanowire dynamical dipolar interactions on spin wave properties.

Conclusions:

  • Collective spin waves propagate in RKKY-coupled Ni80Fe20/Ru/Ni80Fe20 nanowire arrays.
  • Magnonic bandwidths are significantly shaped by both interlayer RKKY exchange and inter-nanowire dipolar interactions.
  • The findings provide fundamental insights into spin wave physics in magnetic multilayers for potential spintronic applications.