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

Superconductor01:24

Superconductor

1.8K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
1.8K
Types Of Superconductors01:28

Types Of Superconductors

1.7K
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
1.7K
Conductors and Insulators01:19

Conductors and Insulators

11.0K
Some materials may easily let electrical charges pass through them, while others obstruct their flow. The former are called conductors and the latter insulators. The atomic structures of materials determine whether they are conductors or insulators of electricity.
Most metals are conductors. Their atomic configuration is such that one or more electron(s) are loosely bound to the nucleus in each atom. Thus, a sea of mobile electrons are available in them, known as free electrons. Their easy...
11.0K
Insulation Coordination01:23

Insulation Coordination

583
Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times...
583
Symmetric Member in Bending01:07

Symmetric Member in Bending

623
In the study of the mechanics of materials, analyzing the behavior of prismatic members under opposing couples is crucial for understanding internal stress distributions, which are essential for structural design. When subjected to couples, a prismatic member experiences internal forces that maintain equilibrium. A couple, characterized by two equal and opposite forces, creates a moment but no resultant force. The internal forces at any section cut of the member must balance these external...
623
Thermal Insulation in Masonry Walls01:22

Thermal Insulation in Masonry Walls

572
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
572

You might also read

Related Articles

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

Sort by
Same author

Tunable magnons in a dual-gated 2D antiferromagnet.

Nature communications·2026
Same author

Topology of Ultralocalized Insulators and Superconductors.

Physical review letters·2026
Same author

Hallmarks of Ballistic Terahertz Magnon Currents in an Antiferromagnetic Insulator.

Physical review letters·2025
Same author

Self-Similar Phase Diagram of the Fibonacci-Driven Quantum Ising Model.

Physical review letters·2025
Same author

Twist-programmable superconductivity in spin-orbit-coupled bilayer graphene.

Nature·2025
Same author

Wave Function Engineering on Superconducting Substrates: Chiral Yu-Shiba-Rusinov Molecules.

ACS nano·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: Feb 16, 2026

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP
08:14

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP

Published on: April 20, 2015

18.4K

Reflection-Symmetric Second-Order Topological Insulators and Superconductors.

Josias Langbehn1, Yang Peng1, Luka Trifunovic1

  • 1Dahlem Center for Complex Quantum Systems and Physics Department, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany.

Physical Review Letters
|December 30, 2017
PubMed
Summary
This summary is machine-generated.

Second-order topological insulators host protected boundary states. Reflection symmetry aids their generation, and these unique states persist even without this symmetry, offering new avenues in topological materials research.

More Related Videos

Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb
06:50

Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb

Published on: December 2, 2017

9.7K
Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
05:26

Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels

Published on: October 19, 2022

2.0K

Related Experiment Videos

Last Updated: Feb 16, 2026

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP
08:14

Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP

Published on: April 20, 2015

18.4K
Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb
06:50

Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb

Published on: December 2, 2017

9.7K
Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
05:26

Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels

Published on: October 19, 2022

2.0K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Topological Matter

Background:

  • Second-order topological insulators are crystalline insulators with unique boundary properties.
  • They possess topologically protected gapless states at the intersection of boundaries.
  • Existence is permitted in five Altland-Zirnbauer symmetry classes without additional spatial symmetries.

Purpose of the Study:

  • To explore the role of reflection symmetry in generating second-order topological insulators and superconductors.
  • To investigate the robustness of topologically protected states when reflection symmetry is broken.

Main Methods:

  • Systematic generation of second-order topological insulators and superconductors using reflection symmetry.
  • Analysis of topological state persistence under broken reflection symmetry.

Main Results:

  • Reflection symmetry provides a method for systematically generating second-order topological insulators and superconductors.
  • Topologically protected states at corners (2D) and edges (3D) remain even when reflection symmetry is broken.
  • A 3D second-order topological insulator with broken time-reversal symmetry exhibits quantized Hall conductance (e^2/h).

Conclusions:

  • Reflection symmetry is a useful tool for discovering and engineering second-order topological phases.
  • The topological states in these systems exhibit remarkable robustness against symmetry breaking.
  • These findings advance the understanding and potential applications of topological materials.