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

Heating and Cooling Curves02:44

Heating and Cooling Curves

23.2K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance,...
23.2K
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

1.7K
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
1.7K
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
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
Carrier Transport01:21

Carrier Transport

1.2K
The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
1.2K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Control of intervalley scattering in Bi<sub>2</sub>Te<sub>3</sub> via temperature-dependent band renormalization.

npj quantum materials·2026
Same author

Electronic switching of topology in LaSbTe.

Nature materials·2025
Same author

Enhanced Superconducting Gap in the Outer CuO_{2} Plane of the Trilayer Cuprate (Hg, Re)Ba_{2}Ca_{2}Cu_{3}O_{8+δ}.

Physical review letters·2025
Same author

Navigating the Maze of Functional Dyspepsia: Emergence of a New Entity, Postprandial Epigastric Pain Syndrome.

Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association·2025
Same author

Functional Dyspepsia and Its Subgroups: Prevalence and Impact in the Rome IV Global Epidemiology Study.

Alimentary pharmacology & therapeutics·2025
Same author

Interplay between hole superconductivity and quantum critical antiferromagnetic fluctuations in electron-doped cuprates.

Nature communications·2025

Video Experimental Relacionado

Updated: May 4, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

6.9K

Comportamiento crítico cuántico en un superconductor de alto T (c)

D van der Marel1, H J A Molegraaf, J Zaanen

  • 1Materials Science Centre, University of Groningen, 9747 AG Groningen, The Netherlands. dirk.vandermarel@physics.unige.ch

Nature
|September 19, 2003
PubMed
Resumen

La criticidad cuántica, un estado de la materia en el cero absoluto, exhibe propiedades invariantes en escala. Este estudio revela un comportamiento universal en los superconductores de alta temperatura, lo que sugiere una transición de fase cuántica no convencional.

Más Videos Relacionados

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
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 4, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

6.9K
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
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
  • Ciencia de los materiales cuánticos Ciencia de los materiales cuánticos.

Sus antecedentes:

  • La criticidad cuántica describe sistemas con grados de libertad cuánticos interactivos infinitos a temperatura cero, exhibiendo invarianza de escala.
  • Los sistemas de electrones fuertemente correlacionados pueden experimentar transiciones de fase cuántica, lo que lleva a estados críticos cuánticos predichos con comportamientos universales de ley de potencia.
  • Si bien existen candidatos en sistemas de fermiones pesados y en óxidos de cobre de alta temperatura de transición (alta Tc), la naturaleza de estas transiciones sigue siendo objeto de debate.

Objetivo del estudio:

  • Investigar los comportamientos universales característicos de la región crítica cuántica en los materiales.
  • Para determinar si los superconductores de alta T (c) exhiben transiciones de fase cuántica no convencionales.
  • Proporcionar evidencia experimental que apoye o refuta la existencia de estados críticos cuánticos en estos materiales.

Principales métodos:

  • Medición experimental del ángulo de fase en los superconductores de alta T (c).
  • Análisis de la relación entre el ángulo de fase medido y el exponente de la conductividad óptica.
  • Comparación de resultados experimentales con predicciones teóricas para fenómenos críticos cuánticos.

Principales resultados:

  • Se observó un comportamiento universal característico de la región crítica cuántica.
  • El ángulo de fase medido experimentalmente coincide exactamente con el exponente de la conductividad óptica.
  • Este acuerdo proporciona una fuerte evidencia de una transición de fase cuántica en los superconductores de alta T (c).

Conclusiones:

  • Los hallazgos indican la presencia de una región crítica cuántica en los superconductores de alta T (c).
  • El comportamiento universal observado sugiere un tipo no convencional de transición de fase cuántica.
  • Esta investigación contribuye a la comprensión de la física compleja de los sistemas de electrones fuertemente correlacionados y la superconductividad de alta T (c).