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

¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.3K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.3K
Superconductor01:24

Superconductor

1.9K
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...
1.9K
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
Ferromagnetism01:31

Ferromagnetism

2.8K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.8K
Second Uniqueness Theorem01:16

Second Uniqueness Theorem

1.4K
Consider a region consisting of several individual conductors with a definite charge density in the region between these conductors. The second uniqueness theorem states that if the total charge on each conductor and the charge density in the in-between region are known, then the electric field can be uniquely determined.
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the surface...
1.4K
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

2.0K
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,...
2.0K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Observation of a Pronounced Hebel-Slichter Peak in the Spin-Lattice Relaxation Rate and Implications for Gap and Pairing Symmetry in LaNiGa_{2}.

Physical review letters·2026
Same author

Dimensionality of the reinforced superconductivity in UTe<sub>2</sub>.

Nature communications·2025
Same author

Unusual <i>5f</i> magnetism in new kagome material UV<sub>6</sub>Sn<sub>6</sub>.

npj quantum materials·2025
Same author

A microscopic Kondo lattice model for the heavy fermion antiferromagnet CeIn<sub>3</sub>.

Nature communications·2023
Same author

Kondo quasiparticle dynamics observed by resonant inelastic x-ray scattering.

Nature communications·2022
Same author

Colossal anomalous Nernst effect in a correlated noncentrosymmetric kagome ferromagnet.

Science advances·2021

Video Experimental Relacionado

Updated: May 6, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

10.2K

La dispersión cuántica isotrópica y la superconductividad no convencional.

T Park1, V A Sidorov, F Ronning

  • 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. tuson@lanl.gov

Nature
|November 21, 2008
PubMed
Resumen

La superconductividad no convencional surge de las fluctuaciones cuánticas en un punto crítico cuántico local, no de los fonones. Este descubrimiento en CeRhIn(5) revela nuevos mecanismos para el emparejamiento de electrones en materiales fuertemente correlacionados.

Más Videos Relacionados

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

6.6K
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: May 6, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

10.2K
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

6.6K
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 Física de la materia condensada
  • Materiales Cuánticos Los materiales cuánticos son los materiales cuánticos.
  • La superconductividad es la superconductividad.

Sus antecedentes:

  • La superconductividad convencional está mediada por fonones.
  • Se propone que la superconductividad no convencional surja de las fluctuaciones magnéticas en sistemas de electrones fuertemente correlacionados cerca de inestabilidades magnéticas.
  • La identificación de nuevos mecanismos de emparejamiento es crucial para comprender la superconductividad a alta temperatura.

Objetivo del estudio:

  • Para investigar la superconductividad mediada por fluctuaciones más allá de los fonones.
  • Explorar el papel de los puntos críticos cuánticos locales en la superconductividad no convencional.
  • Identificar nuevas fuentes de apareamiento de electrones en materiales cuánticos.

Principales métodos:

  • Estudiando el fuertemente correlacionado antiferromagnético CeRhIn ((5) bajo presión.
  • Analizando la dispersión electrónica y la resistividad eléctrica.
  • Investigar las fluctuaciones cuánticas en un punto crítico cuántico local.

Principales resultados:

  • Se observó que la superconductividad surge de un punto crítico cuántico local, distinto de los mecanismos mediados por fonones.
  • La dispersión isotrópica de los portadores de carga y la resistividad sublineal dependiente de la temperatura fueron indicadores clave.
  • Se descubrió que las fluctuaciones magnéticas y de carga coexistentes en el punto crítico eran máximas a la presión óptima para la superconductividad.

Conclusiones:

  • Se ha identificado una nueva fuente de pegamento de emparejamiento para la superconductividad, originada en las fluctuaciones del punto crítico cuántico local.
  • Este hallazgo amplía la comprensión de los mecanismos de superconductividad no convencionales.
  • Abre nuevas vías para el descubrimiento y la ingeniería de nuevos materiales superconductores.