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

1.7K
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...
1.7K
Types Of Superconductors01:28

Types Of Superconductors

1.6K
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...
1.6K
Valence Bond Theory02:42

Valence Bond Theory

11.2K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.2K
Metallic Solids02:37

Metallic Solids

20.5K
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....
20.5K
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.7K
The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
1.7K
Colors and Magnetism03:02

Colors and Magnetism

14.0K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.0K

You might also read

Related Articles

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

Sort by
Same author

A conserved strand-swap mechanism drives heterodimerization of E-cadherin and P-cadherin.

Biochemical and biophysical research communications·2026
Same author

Structure-Guided Engineering of TIGIT to Modulate Its Interaction With Nectin-4, a Tumour-Specific Antigen for the Development of Therapeutic Strategy.

European journal of immunology·2026
Same author

Membrane glycoprotein nectin-4 in tumor associated pathways and anti-cancer therapeutics.

International journal of biological macromolecules·2025
Same author

E-cadherin: A potential biomarker in cancer and a therapeutic target.

Biochimica et biophysica acta. Reviews on cancer·2025
Same author

Atomic-Scale Mapping of Superconductivity in the Incoherent CDW Mosaic Phase of a Transition Metal Dichalcogenide.

Nano letters·2025
Same author

Time-Reversal Symmetry Breaking Superconductivity in HfRhGe: A Noncentrosymmetric Weyl Semimetal.

Advanced materials (Deerfield Beach, Fla.)·2024

Related Experiment Video

Updated: Jan 16, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K

Superconductivity in Hourglass Dirac Chain Metals (Ti, Hf)IrGe.

Pavan Kumar Meena1, Dibyendu Samanta2, Sonika Jangid1

  • 1Department of Physics, Indian Institute of Science Education and Research Bhopal, Bhopal, 462066, India.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|September 30, 2025
PubMed
Summary

Researchers discovered new ternary germanide superconductors, MIrGe (M = Ti, Hf), which are promising candidates for topological superconductivity. These materials exhibit unique topological features and bulk superconductivity, opening avenues for quantum technologies.

Keywords:
Dirac chain metalshourglasstopological superconductivity

More Related Videos

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
04:51

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

3.1K
Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

12.0K

Related Experiment Videos

Last Updated: Jan 16, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K
Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
04:51

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

3.1K
Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

12.0K

Area of Science:

  • Condensed matter physics
  • Materials science
  • Quantum computing

Background:

  • Achieving superconductivity in topological materials is key for realizing topological superconductivity.
  • Ternary germanide superconductors (MIrGe) were predicted to possess non-symmorphic symmetry-protected hourglass Dirac chains.

Purpose of the Study:

  • To investigate the superconducting and topological properties of MIrGe (M = Ti, Hf).
  • To explore their potential as platforms for topological superconductivity.

Main Methods:

  • Comprehensive thermodynamic measurements.
  • Muon-spin rotation/relaxation (µSR) measurements.
  • First-principles calculations.

Main Results:

  • MIrGe materials are conventional bulk type-II superconductors with transition temperatures of 2.24(5) K (TiIrGe) and 5.64(4) K (HfIrGe).
  • They exhibit hourglass-shaped bulk dispersions and Dirac chains protected by nonsymmorphic symmetry.
  • Nontrivial $\mathbb{Z}_2$ topology results in isolated Dirac surface states with helical spin textures.

Conclusions:

  • MIrGe compounds are ideal platforms for proximity-induced topological superconductivity.
  • The coexistence of bulk superconductivity and topological surface states makes them rare and promising for next-generation quantum technologies.