Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

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

944
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...
944
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
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.4K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.4K
Electric Field Inside a Conductor01:20

Electric Field Inside a Conductor

5.9K
When a conductor is placed in an external electric field, the free charges in the conductor redistribute and very quickly reach electrostatic equilibrium. The resulting charge distribution and its electric field have many interesting properties, which can be investigated with the help of Gauss's law.
Suppose a piece of metal is placed near a positive charge. The free electrons in the metal are attracted to the external positive charge and migrate freely toward that region. This region then...
5.9K
Electric Field at the Surface of a Conductor01:26

Electric Field at the Surface of a Conductor

4.6K
Consider a conductor in electrostatic equilibrium. The net electric field inside a conductor vanishes, and extra charges on the conductor reside on its outer surface, regardless of where they originate.
In the 19th century, Michael Faraday conducted the famous ice pail experiment to prove that the charges always reside on the surface of a conductor. The experimental set-up consists of a conducting uncharged container mounted on an insulating stand. The outer surface of the container is...
4.6K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Probing Moiré Excitons in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterobilayers by Combined Micro-photoluminescence and Lateral Force Microscopy.

Nano letters·2026
Same author

Imaging the flat bands of magic-angle graphene reshaped by interactions.

Nature·2026
Same author

Revealing Electron-Electron Interactions in Graphene at Room Temperature with a Quantum Twisting Microscope.

Nano letters·2026
Same author

Optical control over topological Chern number in moiré materials.

Nature·2026
Same author

Observation of a superfluid-to-insulator transition of bilayer excitons.

Nature·2026
Same author

Bandwidth-tuned Mott transition and superconductivity in moiré WSe<sub>2</sub>.

Nature·2026

Video Experimental Relacionado

Updated: Jun 9, 2025

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

11.4K

Superconductividad en doble capa retorcida

Yiyu Xia1, Zhongdong Han2, Kenji Watanabe3

  • 1School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA. yx579@cornell.edu.

Nature
|October 31, 2024
PubMed
Resumen

Los investigadores observaron una robusta superconductividad en los materiales de moiré de diselenuro de tungsteno (WSe2) en dos capas retorcidas. Este hallazgo desafía las limitaciones anteriores, sugiriendo nuevas vías para explorar la superconductividad en nuevos sistemas de banda plana.

Más Videos Relacionados

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.4K
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

2.7K

Videos de Experimentos Relacionados

Last Updated: Jun 9, 2025

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

11.4K
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.4K
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

2.7K

Área de la Ciencia:

  • Física de la materia condensada
  • Ciencias de los materiales
  • Los materiales cuánticos

Sus antecedentes:

  • Los materiales de Moiré exhiben bandas planas de electrones, lo que lleva a fuertes correlaciones de electrones y fases cuánticas.
  • Anteriormente, la superconductividad solo se observaba en materiales moiré basados en grafeno, lo que dejaba sin explicación su ausencia en otros sistemas como los materiales moiré semiconductores.
  • Esta brecha desafió la comprensión de la superconductividad dentro de las bandas planas.

Objetivo del estudio:

  • Investigar la posibilidad de una superconductividad robusta en materiales semiconductores más allá del grafeno.
  • Explorar los mecanismos subyacentes de la superconductividad en los sistemas de banda plana.
  • Para entender la relación entre la superconductividad, las correlaciones de electrones y la localización de la carga.

Principales métodos:

  • Fabricación y caracterización del deselenido de tungsteno en dos capas retorcido (WSe2) con ángulos de torsión específicos (3,5° y 3,65°).
  • Medición de las propiedades superconductoras, incluida la temperatura de transición y su relación con la temperatura de Fermi.
  • Ajuste de los campos de desplazamiento externos para observar las transiciones entre los estados metálicos, superconductores y aislantes correlacionados.

Principales resultados:

  • Se observó una superconductividad robusta tanto en la doble capa retorcida de 3,5 ° como en la de 3,65 ° WSe2.
  • La superconductividad surgió cerca del llenado de la mitad de la banda y los campos de desplazamiento externo cero, con temperaturas de transición óptimas alrededor de 200 mK.
  • Se encontró que el estado superconductor limita distintas fases metálicas y la transición continua en un aislante correlacionado bajo campos de desplazamiento variables.

Conclusiones:

  • El descubrimiento de la superconductividad en los materiales moiré WSe2 amplía la familia de sistemas moiré superconductores.
  • La superconductividad observada, que ocurre cerca de la localización de carga, sugiere fuertemente sus orígenes en las correlaciones de electrones.
  • Este trabajo proporciona información crítica sobre la naturaleza de la superconductividad en sistemas de banda plana fuertemente correlacionados.