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

Imperfections in Crystal Structure: Point, Line and Plane Defects01:25

Imperfections in Crystal Structure: Point, Line and Plane Defects

32
A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
32
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

37
Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
37
Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

Imperfections in Crystal Structure: Non-Stoichiometric Defects

29
Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
29

You might also read

Related Articles

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

Sort by
Same author

Shaping chaos in bilayer graphene cavities.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Chronic heart failure detection based on long-term RR interval dynamics.

Journal of electrocardiology·2026
Same author

Detecting sleep apnea using non-linear measures of heart rate variability.

Respiratory research·2026
Same author

Performance of the 12-lead ECG in predicting short- and long-term risk of sudden cardiac death.

NPJ digital medicine·2026
Same author

Dynamical cross-correlations between RR and QT intervals in long-term electrocardiogram recordings.

Scientific reports·2026
Same author

Diffusion in the inverted triangular soft Lorentz gas.

Physical review. E·2025

Related Experiment Video

Updated: Mar 11, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.5K

Strong quantum scarring by local impurities.

Perttu J J Luukko1,2, Byron Drury3, Anna Klales4

  • 1Nanoscience Center, Department of Physics, University of Jyväskylä, Jyväskylä FI-40014, Finland.

Scientific Reports
|November 29, 2016
PubMed
Summary
This summary is machine-generated.

We discovered strong quantum scars in perturbed quantum wells, which are unusual eigenstates resembling classical orbits. These scars enable highly efficient quantum wave packet transport, offering potential for quantum transport applications.

More Related Videos

3D Depth Profile Reconstruction of Segregated Impurities Using Secondary Ion Mass Spectrometry
07:10

3D Depth Profile Reconstruction of Segregated Impurities Using Secondary Ion Mass Spectrometry

Published on: April 29, 2020

2.1K
Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

16.2K

Related Experiment Videos

Last Updated: Mar 11, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.5K
3D Depth Profile Reconstruction of Segregated Impurities Using Secondary Ion Mass Spectrometry
07:10

3D Depth Profile Reconstruction of Segregated Impurities Using Secondary Ion Mass Spectrometry

Published on: April 29, 2020

2.1K
Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
11:47

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments

Published on: February 27, 2013

16.2K

Area of Science:

  • Quantum mechanics
  • Condensed matter physics
  • Mesoscopic physics

Background:

  • Quantum scars are quantum eigenstates that mimic classical periodic orbits.
  • Traditional scar theory explains these phenomena through unstable classical periodic orbits.
  • Quantum wells are semiconductor devices exhibiting quantum mechanical properties.

Purpose of the Study:

  • To discover and characterize strong quantum scars in two-dimensional quantum wells with local impurities.
  • To investigate the origin of these scars beyond conventional scar theory.
  • To explore the potential of these scars for quantum transport applications.

Main Methods:

  • Theoretical analysis of quantum eigenstates in perturbed two-dimensional quantum wells.
  • Investigation of classical resonances and quantum near-degeneracy.
  • Numerical simulations of quantum wave packet dynamics.

Main Results:

  • Discovery of strong quantum scars not explained by standard scar theory.
  • Identification of classical resonances and quantum near-degeneracy as the underlying mechanism.
  • Demonstration of preferred scar orientations that maximize overlap with impurities.
  • Observation of significantly enhanced wave packet recurrences and efficient transport.

Conclusions:

  • Quantum scars in perturbed quantum wells arise from classical resonances, not just unstable periodic orbits.
  • These scars can be oriented to facilitate highly efficient quantum wave packet transport.
  • The controllability and efficiency of these scars hold promise for quantum transport technologies.