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

Metallic Solids02:37

Metallic Solids

21.5K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
21.5K
Ionic Crystal Structures02:42

Ionic Crystal Structures

21.1K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
21.1K
Imperfections in Crystal Structure: Point, Line and Plane Defects01:25

Imperfections in Crystal Structure: Point, Line and Plane Defects

96
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...
96
Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

4.3K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
4.3K
Structures of Solids02:22

Structures of Solids

21.9K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
21.9K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

31.8K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
31.8K

You might also read

Related Articles

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

Sort by
Same author

Relaxor behavior in rocksalt cation-ordered material induced by (anti)ferroelectric phase competition.

Nature communications·2026
Same author

Colossal Photovoltaic Current in Ferroelectric Oxide by Constructing Defect Band.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Ferroelectric Fractals: Switching Mechanism of Wurtzite AlN.

Physical review letters·2026
Same author

Bridging experiment and theory of relaxor ferroelectrics with multislice electron ptychography.

Science (New York, N.Y.)·2026
Same author

Strong intrinsic multiferroism and magnetoelectric coupling in (1-<i>x</i>)BiFeO<sub>3</sub>-(<i>x</i>)BaTiO<sub>3</sub> films.

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

First-Principles Calculation of the Shift Current Bulk Photovoltaic Effect from Carrier Recombination.

Physical review letters·2026
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: Apr 4, 2026

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.7K

Layered Topological Crystalline Insulators.

Youngkuk Kim1, C L Kane2, E J Mele2

  • 1The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.

Physical Review Letters
|September 5, 2015
PubMed
Summary
This summary is machine-generated.

Topological crystalline insulators (TCIs) are materials with unique properties determined by crystal symmetries. This study explores new 3D TCI phases in layered materials, tunable by interlayer interactions and strain.

More Related Videos

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
08:49

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Published on: December 4, 2014

14.9K
Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

12.9K

Related Experiment Videos

Last Updated: Apr 4, 2026

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.7K
Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
08:49

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Published on: December 4, 2014

14.9K
Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

12.9K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid-State Physics

Background:

  • Topological crystalline insulators (TCIs) are materials characterized by topological properties linked to crystalline symmetries.
  • Understanding the interplay between symmetry and topology is crucial for discovering novel quantum materials.

Purpose of the Study:

  • To investigate the realization of diverse three-dimensional (3D) topological phases in layered TCI structures.
  • To explore the role of interlayer interactions and mechanical strain in tuning these topological phases.
  • To identify new TCI materials with potential applications.

Main Methods:

  • First-principles calculations were employed to study a 3D crystal constructed from stacked 2D TCI layers.
  • Analysis focused on mirror Chern numbers (MCNs) defined on inequivalent mirror-invariant planes.
  • A specific example of a PbSe (001) monolayer/h-BN heterostructure was investigated.

Main Results:

  • Diverse 3D topological phases were identified, characterized by MCNs (μ1,μ2).
  • New TCI phases were demonstrated in layered materials like PbSe/h-BN heterostructures.
  • Mechanical strain was shown to effectively tune these topological phases.

Conclusions:

  • The study highlights the significance of MCNs on inequivalent mirror-symmetric planes in reciprocal space.
  • New avenues for discovering and engineering novel topological crystalline insulators are opened.
  • The findings contribute to the broader understanding of topological materials and their potential applications.