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Related Concept Videos

Superconductor01:24

Superconductor

1.1K
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...
1.1K
Types Of Superconductors01:28

Types Of Superconductors

941
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...
941
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.3K
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,...
1.3K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

300
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
300
P-N junction01:11

P-N junction

469
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
469

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Related Experiment Video

Updated: Jun 7, 2025

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

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Probing p-wave superconductivity in UTe2 via point-contact junctions.

Hyeok Yoon1, Yun Suk Eo1, Jihun Park1,2

  • 1Department of Physics, Maryland Quantum Materials Center, University of Maryland, College Park, MD USA.

Npj Quantum Materials
|November 18, 2024
PubMed
Summary
This summary is machine-generated.

Uranium ditelluride (UTe2) shows strong evidence for p-wave superconductivity. Spectroscopic studies reveal a dominant p-wave gap, supporting spin-triplet pairing in this material.

Keywords:
Superconducting properties and materialsTopological matter

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Materials

Background:

  • Uranium ditelluride (UTe2) is a leading candidate for bulk p-wave superconductivity.
  • Understanding the pairing mechanism in UTe2 is crucial for advancing topological quantum computing.

Purpose of the Study:

  • To spectroscopically investigate the superconducting phase of UTe2 at ambient pressure.
  • To provide evidence for the proposed p-wave pairing symmetry and spin-triplet nature.

Main Methods:

  • Fabrication of point-contact junctions on different crystalline facets of UTe2.
  • Measurement of conductance spectra down to 250 mK and up to 18 T.
  • Analysis of spectra using the Blonder-Tinkham-Klapwijk (BTK) model for p-wave pairing.

Main Results:

  • Spectroscopic data shows good agreement with the BTK model for p-wave pairing.
  • A dominant p-wave gap function with an amplitude of 0.26 ± 0.06 meV was extracted.
  • The extracted gap structure is consistent with spin-triplet pairing.

Conclusions:

  • This study provides strong spectroscopic evidence supporting the p-wave superconducting state in UTe2.
  • The findings reinforce UTe2's potential as a platform for exotic superconductivity and spintronic applications.