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

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 have a...
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

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,...
Rolling Without Slipping01:09

Rolling Without Slipping

People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is essential...
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

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

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...
Atomic Nuclei: Nuclear Spin01:08

Atomic Nuclei: Nuclear Spin

All atomic particles possess an intrinsic angular momentum, or 'spin'. Electrons, protons, and neutrons each have a spin value of ½, although protons and neutrons in nuclei may have higher half-integer spins owing to energetic factors.
Atomic nuclei have a net nuclear spin, , which can have an integer or half-integer value. In atomic nuclei, the spins of protons are paired against each other but not with neutrons, and vice versa. Consequently, an even number of protons does not contribute to...
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...

You might also read

Related Articles

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

Sort by
Same author

Fast barrier-free switching in synthetic antiferromagnets.

Scientific reports·2025
Same author

Proximity-enhanced magnetocaloric effect in ferromagnetic trilayers.

Journal of physics. Condensed matter : an Institute of Physics journal·2022
Same author

Thermal Gating of Magnon Exchange in Magnetic Multilayers with Antiferromagnetic Spacers.

Physical review letters·2021
Same author

Angle Resolved Relaxation of Spin Currents by Antiferromagnets in Spin Valves.

Physical review letters·2020
Same author

Spin dynamics in a Curie-switch.

Journal of physics. Condensed matter : an Institute of Physics journal·2015
Same author

Rotatable magnetic anisotropy in Si/SiO2/(Co2Fe)(x)Ge(1-x) Heusler alloy films.

Journal of physics. Condensed matter : an Institute of Physics journal·2013

Related Experiment Video

Updated: Jul 16, 2026

How to Build a Vacuum Spring-transport Package for Spinning Rotor Gauges
09:26

How to Build a Vacuum Spring-transport Package for Spinning Rotor Gauges

Published on: April 7, 2016

Surface spin-valve effect.

I K Yanson1, Yu G Naidyuk, V V Fisun

  • 1B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin Avenue, 61103 Kharkiv, Ukraine.

Nano Letters
|March 6, 2007
PubMed
Summary

Researchers observed spin-valve behavior in atomic layers at ferromagnetic interfaces. This effect, localized to specific interfaces using phonon spectroscopy, suggests novel surface spin-valve mechanisms in thin films.

Related Experiment Videos

Last Updated: Jul 16, 2026

How to Build a Vacuum Spring-transport Package for Spinning Rotor Gauges
09:26

How to Build a Vacuum Spring-transport Package for Spinning Rotor Gauges

Published on: April 7, 2016

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Surface Science

Background:

  • Ferromagnetic materials exhibit unique magnetic properties crucial for spintronic devices.
  • Understanding interfacial phenomena is key to controlling magnetism at the nanoscale.
  • Spin-valve effects are fundamental to magnetic data storage and sensing technologies.

Purpose of the Study:

  • To investigate the mechanism of spin-valve-like hysteresis observed at ferromagnetic interfaces.
  • To probe the role of atomic layers and interfaces in spin switching phenomena.
  • To explore the potential for current- or field-driven surface spin-valves.

Main Methods:

  • Utilized phonon spectroscopy on nanometer-sized point contacts as an in situ probe.
  • Analyzed distinctive energy phonon peaks to distinguish interface contributions.
  • Investigated spin switching localization at top or bottom interfaces in thin ferromagnetic layers.

Main Results:

  • Observed spin-valve-like hysteresis within a few atomic layers at a ferromagnetic interface.
  • Successfully localized spin switching to specific interfaces using phonon spectroscopy.
  • Identified energetically distinct, atomically thin surface spin layers as the key mechanism.

Conclusions:

  • Atomically thin surface spin layers can function as independent spin-valves within a single ferromagnetic film.
  • The observed effect is driven by current or magnetic fields, enabling novel device functionalities.
  • Phonon spectroscopy provides a powerful tool for in situ characterization of interfacial magnetic phenomena.