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

980
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...
980
Oscillations In An LC Circuit01:30

Oscillations In An LC Circuit

2.4K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
2.4K
Forced Oscillations01:06

Forced Oscillations

6.6K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
6.6K
Frequency of Spring-Mass System01:17

Frequency of Spring-Mass System

5.8K
One interesting characteristic of the simple harmonic motion (SHM) of an object attached to a spring is that the angular frequency, and the period and frequency of the motion, depend only on the mass and the force constant of the spring, and not on other factors such as the amplitude of the motion or initial conditions. We can use the equations of motion and Newton's second law to find the angular frequency, frequency, and period.
Consider a block on a spring on a frictionless surface. There...
5.8K
Damped Oscillations01:07

Damped Oscillations

5.9K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
5.9K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.0K
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,...
1.0K

You might also read

Related Articles

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

Sort by
Same author

Multidirectional Spin-Orbit Torque Magnetization Dynamics in beyond Room Temperature Van der Waals Magnet Devices.

Nano letters·2026
Same author

MRAM: A Versatile Non-Volatile Memory for Next-Generation Computing.

Nanomaterials (Basel, Switzerland)·2026
Same author

Bulk Spin-Orbit Torque-Driven Spin Hall Nano-Oscillators Using PtBi Alloys with Engineered Crystallinity.

ACS applied materials & interfaces·2026
Same author

Nanosecond phase ordering in ultra-large spin Hall nano-oscillator lattices for unconventional computing.

Nature nanotechnology·2026
Same author

Correction to Rapid Substrate Neutralization via Side-Chain Hydroxylated Copolymers for Efficient Vertical Alignment of Block Copolymers.

ACS macro letters·2026
Same author

Spin torque nano-oscillators with tilted magnetic anisotropy.

Nanoscale horizons·2026

Related Experiment Video

Updated: Aug 11, 2025

Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

12.3K

Field-Free High-Frequency Exchange-Spring Spin-Torque Nano-Oscillators.

Sheng Jiang1,2,3,4, Sunjae Chung5, Quang Tuan Le2

  • 1School of Microelectronics, South China University of Technology, 510641 Guangzhou, China.

Nano Letters
|February 7, 2023
PubMed
Summary

We demonstrate novel exchange-spring spin-torque nano-oscillators (STNOs) that operate at high frequencies (>10 GHz) without an external magnetic field. This breakthrough enhances spintronic device design for future computing and memory applications.

Keywords:
Exchange-spring magnetField-free auto-oscillationMagnetic dropletSpin-torque nano-oscillators

More Related Videos

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.2K
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.7K

Related Experiment Videos

Last Updated: Aug 11, 2025

Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

12.3K
High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.2K
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.7K

Area of Science:

  • Spintronics
  • Materials Science
  • Nanotechnology

Background:

  • Spin-torque nano-oscillators (STNOs) are nanoscale devices generating microwave signals via spin-torque-induced magnetodynamics.
  • STNOs hold promise for applications in high-frequency electronics, magnetic memory, and neuromorphic computing.

Purpose of the Study:

  • To demonstrate the first exchange-spring STNOs with a novel magnetic configuration.
  • To explore the high-frequency emission and dynamics of these new STNOs.

Main Methods:

  • Fabrication of STNOs with an exchange-spring reference layer ([Co/Pd]-Co) and a perpendicular free layer ([Co/Ni]).
  • Characterization of microwave emission and magnetic dynamics under varying current polarities and zero magnetic field.

Main Results:

  • Achieved high-frequency microwave emission exceeding 10 GHz at zero magnetic field.
  • Observed distinct exchange-spring dynamics in the reference layer and magnetic droplet solitons in the free layer.
  • Demonstrated bipolar operation over a 20 GHz frequency range.

Conclusions:

  • Exchange-spring STNOs offer extended design freedom and functionality compared to conventional STNOs.
  • These devices are suitable for energy-efficient, high-frequency spintronic and neuromorphic applications.
  • The observed phenomena pave the way for advanced spintronic device development.