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

Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis. This...
Diamagnetism01:26

Diamagnetism

Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Magnetic Damping01:17

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...

You might also read

Related Articles

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

Sort by
Same author

Frictional Unlocking and Energy-Controlled Constrained Densification in Nanoparticle Networks.

ACS nano·2025
Same author

Superlubric-Locked Transition of Twist Grain Boundaries in 3D Crystals.

Physical review letters·2025
Same author

Convergence of Body-Orders in Linear Atomic Cluster Expansions.

The journal of physical chemistry. A·2025
Same author

Can Neural Networks Learn Atomic Stick-Slip Friction?

ACS applied materials & interfaces·2025
Same author

Striped Twisted State in the Orientational Epitaxy on Quasicrystals.

Physical review letters·2025
Same author

Universal moiré buckling of freestanding 2D bilayers.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Jun 5, 2026

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

Atomic spin-sensitive dissipation on magnetic surfaces.

Franco Pellegrini1, Giuseppe E Santoro, Erio Tosatti

  • 1International School for Advanced Studies (SISSA), Via Bonomea 265, I-34136 Trieste, Italy.

Physical Review Letters
|January 15, 2011
PubMed
Summary
This summary is machine-generated.

We discovered how magnetic tips interacting with atomic spins cause energy loss in nanomechanics. This spin-phonon interaction explains observed magnetic dissipation and suggests tuning tip distance can reduce it.

More Related Videos

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
15:58

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

Related Experiment Videos

Last Updated: Jun 5, 2026

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
15:58

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

Area of Science:

  • Condensed Matter Physics
  • Nanomechanics
  • Surface Science

Background:

  • Spin-sensitive nanomechanics, including magnetic exchange force microscopy (MEFM), probes atomic spins using oscillating magnetic tips.
  • Understanding energy dissipation is crucial for interpreting experimental results in these techniques.

Purpose of the Study:

  • To identify the primary mechanism of energy dissipation in spin-sensitive nanomechanics.
  • To explain the observed spin-dependent dissipation and hysteretic spin flips in experiments like Fe tips on NiO.
  • To explore the possibility of controlling dissipation by tuning tip-surface interactions.

Main Methods:

  • Developed a theoretical model coupling spin and atom coordinates via tip-surface exchange interaction.
  • Analyzed the resulting spin-phonon problem using a Caldeira-Leggett-type dissipation framework.
  • Investigated the overdamped and underdamped regimes of dissipation as a function of tip-surface distance.

Main Results:

  • Identified spin-phonon coupling as the key mechanism for energy dissipation.
  • Explained hysteretic local spin flips and significant spin-dependent dissipation in the overdamped regime, consistent with experimental data.
  • Predicted a phase transition to an underdamped regime with substantially reduced dissipation by increasing tip-surface distance.

Conclusions:

  • The spin-phonon interaction model accurately describes energy dissipation in spin-sensitive nanomechanics.
  • Experimental observations of magnetic dissipation can be explained by this mechanism.
  • Precise control over tip-surface distance offers a pathway to minimize dissipation and enhance nanomechanical measurements.