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

NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

3.3K
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...
3.3K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.5K
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,...
1.5K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.5K
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...
1.5K
Heart Valves01:16

Heart Valves

12.3K
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
12.3K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

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

1.7K
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...
1.7K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

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

1.5K
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 involved orbitals. The...
1.5K

You might also read

Related Articles

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

Sort by
Same author

Orbital magnetoresistance in the antiferromagnet CoO driven by dynamic orbital angular momentum.

Science (New York, N.Y.)·2026
Same author

Optical-controlled magnon transport based on spin crossover switched molecular magnets.

Smart molecules : open access·2026
Same author

Hot exciton dissociation in graphene nanoribbons.

Nature communications·2026
Same author

High-throughput characterization of local structural imperfections in freestanding oxide membranes by lock-in thermography.

Science bulletin·2026
Same author

Energy-efficient field-free switching by orbital torque and spin-reorientation.

Nature communications·2026
Same author

Quantum Impurity Sensing of Altermagnetic Order.

Physical review letters·2026

Related Experiment Video

Updated: Feb 13, 2026

Multi-step Variable Height Photolithography for Valved Multilayer Microfluidic Devices
10:18

Multi-step Variable Height Photolithography for Valved Multilayer Microfluidic Devices

Published on: January 27, 2017

15.1K

Magnon detection using a ferroic collinear multilayer spin valve.

Joel Cramer1,2, Felix Fuhrmann1, Ulrike Ritzmann1,3

  • 1Institute of Physics, Johannes Gutenberg-University Mainz, 55099, Mainz, Germany.

Nature Communications
|March 16, 2018
PubMed
Summary

Researchers developed a new spin valve using magnetic multilayers for efficient information transport. This magnonic spin current device shows a 120% amplitude change based on magnetization orientation, paving the way for advanced logic operations.

More Related Videos

Inkjet-printed Polyvinyl Alcohol Multilayers
05:11

Inkjet-printed Polyvinyl Alcohol Multilayers

Published on: May 11, 2017

13.1K
A Multilayer Microfluidic Platform for the Conduction of Prolonged Cell-Free Gene Expression
11:23

A Multilayer Microfluidic Platform for the Conduction of Prolonged Cell-Free Gene Expression

Published on: October 6, 2019

10.8K

Related Experiment Videos

Last Updated: Feb 13, 2026

Multi-step Variable Height Photolithography for Valved Multilayer Microfluidic Devices
10:18

Multi-step Variable Height Photolithography for Valved Multilayer Microfluidic Devices

Published on: January 27, 2017

15.1K
Inkjet-printed Polyvinyl Alcohol Multilayers
05:11

Inkjet-printed Polyvinyl Alcohol Multilayers

Published on: May 11, 2017

13.1K
A Multilayer Microfluidic Platform for the Conduction of Prolonged Cell-Free Gene Expression
11:23

A Multilayer Microfluidic Platform for the Conduction of Prolonged Cell-Free Gene Expression

Published on: October 6, 2019

10.8K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Spintronics

Background:

  • Pure magnonic spin currents in insulators offer an alternative to charge-current spintronics.
  • Insulating ferromagnets present advantages like reduced Joule heating and spin wave damping for logic devices.

Purpose of the Study:

  • To explore magnetization orientation-dependent spin current detection.
  • To develop new components for complex logic operations beyond the majority gate.

Main Methods:

  • Fabrication of collinear magnetic multilayers (Y3Fe5O12|CoO|Co).
  • Utilizing ferromagnetic resonance spin pumping for spin current generation.
  • Analyzing spin current detection signals and their dependence on magnetization alignment.

Main Results:

  • Observed a spin valve-like behavior in Y3Fe5O12|CoO|Co structures.
  • Demonstrated a 120% change in spin current detection amplitude based on relative magnetization orientation.
  • Confirmed the reliability and identified the origin of the effect through temperature and power-dependent measurements.

Conclusions:

  • Magnetization orientation significantly influences spin current detection signals in these magnetic multilayers.
  • The demonstrated spin valve-like effect is a crucial step towards building complex magnonic logic devices.
  • This work highlights the potential of insulating ferromagnets for efficient information processing in spintronics.