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

1.5K
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...
1.5K
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

1.6K
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.
1.6K
Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

937
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.
937
Atomic Nuclei: Nuclear Magnetic Moment00:59

Atomic Nuclei: Nuclear Magnetic Moment

2.7K
All atomic nuclei are positively charged. When they have a nonzero spin, they behave like rotating charges. As a consequence of their charge and spin, these nuclei generate a magnetic field (B). This, in turn, gives rise to a magnetic moment (μ), which is randomly oriented in the absence of an external magnetic field. When an external magnetic field (B0) is applied, the magnetic moment vectors can align with the field or against it in 2 + 1 orientations. A hydrogen nucleus, which is just a...
2.7K
Atomic Nuclei: Nuclear Spin01:08

Atomic Nuclei: Nuclear Spin

4.4K
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...
4.4K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.2K
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...
1.2K

You might also read

Related Articles

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

Sort by
Same author

A moldable weak-acid-responsive I₂/TCP/PBST composite hydrogel for use in inflammatory extraction socket preservation and bone augmentation.

Biomaterials advances·2026
Same author

Quantum simulation of charge and exciton transfer in multi-mode models using engineered reservoirs.

Nature communications·2025
Same author

Hepatoprotective effects of wine-steamed <i>Schisandra sphenanthera</i> fruit in alleviating APAP-induced liver injury <i>via</i> the gut-liver axis.

Food & function·2025
Same author

Sparse Convolution FPGA Accelerator Based on Multi-Bank Hash Selection.

Micromachines·2025
Same author

Phase Transition and Multistability in Dicke Dimer.

Physical review letters·2024
Same author

Trapped-ion quantum simulation of electron transfer models with tunable dissipation.

Science advances·2024

Related Experiment Video

Updated: Nov 29, 2025

Scanning SQUID Study of Vortex Manipulation by Local Contact
06:53

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

7.1K

Spin-Nematic Vortex States in Cold Atoms.

Li Chen1,2, Yunbo Zhang3, Han Pu4

  • 1Institute of Theoretical Physics and State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan 030006, China.

Physical Review Letters
|November 20, 2020
PubMed
Summary
This summary is machine-generated.

Researchers explored high spin cold atoms, coupling spin tensor and orbital angular momentum. This revealed a novel spin-nematic vortex state, a new quantum phase of matter with potential for topological quantum computing.

More Related Videos

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
06:27

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques

Published on: July 2, 2018

8.4K
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

3.1K

Related Experiment Videos

Last Updated: Nov 29, 2025

Scanning SQUID Study of Vortex Manipulation by Local Contact
06:53

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

7.1K
Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
06:27

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques

Published on: July 2, 2018

8.4K
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

3.1K

Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Condensed Matter Physics
  • Quantum Information Science

Background:

  • Spin degrees of freedom in cold atoms significantly enrich their physical properties.
  • High spin systems (spin quantum number > 1/2) allow for complex spin structures beyond simple vectors, including spin tensors.
  • Understanding and controlling these complex spin interactions is key to exploring novel quantum phases.

Purpose of the Study:

  • To propose a scheme for coupling the spin tensor with the center-of-mass orbital angular momentum in spin-1 cold atoms.
  • To investigate the emergence of new quantum phases of matter resulting from this coupling.
  • To characterize the properties of any newly discovered quantum states, particularly their topological nature.

Main Methods:

  • Theoretical proposal for a simple scheme to couple spin tensor and orbital angular momentum.
  • Analysis of a spin-1 cold atom system under the proposed coupling.
  • Identification and characterization of resulting quantum phases and their topological properties.

Main Results:

  • A novel quantum phase of matter, termed the spin-nematic vortex state, has been identified.
  • This state exhibits vorticity within an SU(2) spin-nematic tensor subspace.
  • Under specific conditions, these spin-nematic vortex states are characterized by quantized topological numbers.

Conclusions:

  • The coupling of spin tensor and orbital angular momentum in spin-1 cold atoms leads to a new topological quantum phase.
  • The discovered spin-nematic vortex state offers a unique platform for studying topological phenomena in quantum matter.
  • This research opens new avenues for exploring topological quantum matter utilizing high-spin atomic systems.