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

Semiconductors01:22

Semiconductors

There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Superconductor01:24

Superconductor

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...
Types Of Superconductors01:28

Types Of Superconductors

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...
Types of Semiconductors01:20

Types of Semiconductors

Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

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 semiconductor's...
Band Theory02:35

Band Theory

When two or more atoms come together to form a molecule, their atomic orbitals combine and molecular orbitals of distinct energies result. In a solid, there are a large number of atoms, and therefore a large number of atomic orbitals that may be combined into molecular orbitals. These groups of molecular orbitals are so closely placed together to form continuous regions of energies, known as the bands.
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Mapping the crystallization landscape of rare earth MOFs: a high-throughput investigation of structure, kinetics, and selectivity.

Chemical science·2026
Same author

Mitigating Electrochemical Degradation in CsPbBr<sub>3</sub> Gamma Detectors by Organic and Inorganic Encapsulation.

ACS applied materials & interfaces·2026
Same author

Deterministic Control of Sn<sup>3+</sup> Valence and Electronic Phase Evolution in AgSnSe<sub>2</sub>.

Journal of the American Chemical Society·2026
Same author

Tuning optical properties and local lone-pair off-centering in "hollow" FA<sub>1-<i>x</i></sub> {<i>en</i>} <sub><i>x</i></sub> Pb <sub><i>η</i>-<i>y</i></sub> Sn <sub><i>y</i></sub> Br<sub>3</sub> perovskites.

Chemical science·2025
Same author

La<sub>3</sub>CuTe<sub>5</sub>: A Narrow-Gap Semiconductor with Indirect Gap and Dual-Regime Thermally Activated Transport.

Inorganic chemistry·2025
Same author

Disorder-induced universality and scaling in hole-doped iron-based superconductors.

Communications materials·2025

Video Experimental Relacionado

Updated: May 8, 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

Superconductividad en el semiconductor de brecha estrecha CsBi4Te6

Christos D Malliakas1, Duck Young Chung, Helmut Claus

  • 1Materials Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States.

Journal of the American Chemical Society
|September 14, 2013
PubMed
Resumen

La superconductividad fue descubierta en el semiconductor de brecha estrecha telururo de bismuto de cesio (CsBi4Te6). Este hallazgo sugiere que el dopaje de esta clase de materiales podría producir nuevos superconductores basados en semiconductores.

Más Videos Relacionados

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

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

Videos de Experimentos Relacionados

Last Updated: May 8, 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

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

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

Área de la Ciencia:

  • Física de la materia condensada Física de la materia condensada
  • Ciencia de los materiales Ciencia de los materiales.
  • Química del estado sólido.

Sus antecedentes:

  • La superconductividad, un fenómeno de resistencia eléctrica cero, se observa típicamente en metales y aleaciones.
  • Los semiconductores de brecha estrecha presentan una vía única y en gran medida inexplorada para la investigación de la superconductividad.
  • La serie homóloga Cs4[Bi(2n+4)Te(3n+6) es una clase de materiales recientemente identificados con potencial para nuevas propiedades electrónicas.

Objetivo del estudio:

  • Para investigar el potencial de superconductividad en el semiconductor de espacio estrecho CsBi4Te6.6.
  • Caracterizar las propiedades superconductoras, incluida la temperatura crítica y el campo crítico, de CsBi4Te6.6.
  • Explorar la relación entre la estructura cristalina y la superconductividad en el sistema CsBi4Te6 y sus series homólogas.

Principales métodos:

  • Medidas de la resistividad eléctrica dependientes de la temperatura.
  • Mediciones de susceptibilidad magnética dependientes de la temperatura.
  • Mediciones de resistividad eléctrica dependientes del campo magnético para determinar campos críticos.

Principales resultados:

  • Se observó superconductividad en muestras CsBi4Te6 de tipo p con una temperatura de transición superconductora (Tc) de alrededor de 4.4 K.
  • Se encontró que el estoiquiométrico CsBi4Te6 no es superconductor, lo que indica la importancia del tipo de muestra o dopaje.
  • Se estimó un campo magnético crítico alto (Hc) de aproximadamente 10 Tesla a partir de datos de resistividad dependientes del campo.
  • El sistema CsBi4Te6 cristaliza en una estructura monoclinica y es el primer miembro de la serie homóloga Cs4[Bi(2n+4) Te(3n+6).

Conclusiones:

  • Se descubrió una superconductividad no convencional en el semiconductor de brecha estrecha CsBi4Te6.6.
  • El alto campo crítico sugiere potencial para aplicaciones en entornos de fuerte campo magnético.
  • El dopaje dentro de la serie homóloga Cs4[Bi(2n+4) Te(3n+6) puede conducir al desarrollo de una nueva clase de superconductores basados en semiconductores.