Video Experimental Relacionado
Updated: Mar 30, 2026

04:51
Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
Published on: July 8, 2021
3.2K
Un superconductor para la transición de fase superfluida en el hidrógeno metálico líquido
Egor Babaev1, Asle Sudbø, N W Ashcroft
1Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York, 14853-2501, USA. eb235@cornell.edu
Nature
|October 8, 2004
Resumen
Los efectos cuánticos hacen que el hidrógeno metálico líquido sea un nuevo estado de la materia. El análisis topológico lo sugiere.
Área de la Ciencia:
- Física de la materia condensada Física de la materia condensada Física de la materia condensada Física de la materia condensada Física de la materia condensada
- La mecánica cuántica es la mecánica cuántica.
- Ciencia de los materiales ciencia de los materiales.
Sus antecedentes:
- El hidrógeno, a pesar de su simplicidad, exhibe complejos efectos cuánticos en fases condensadas.
- La estructura del hidrógeno denso sigue siendo experimentalmente difícil de determinar.
- Los estudios de alta presión sugieren que el hidrógeno puede convertirse en un metal líquido a bajas temperaturas.
Objetivo del estudio:
- Para investigar la fase proyectada del hidrógeno metálico líquido.
- Para determinar si el hidrógeno metálico líquido representa un nuevo tipo de fluido cuántico ordenado.
- Para analizar el potencial de nuevas transiciones de fase en este estado.
Principales métodos:
- Análisis topológico de la fase de hidrógeno metálico líquido predicho.
- Modelado teórico de efectos cuánticos y transiciones de fase.
- Comparación con las categorías existentes de fluidos cuánticos ordenados (superconductores, superfluidos).
Principales resultados:
- El hidrógeno metálico líquido no encaja exclusivamente en las categorías existentes de superconductores o superfluidos.
- El análisis topológico indica un nuevo tipo de fluido cuántico ordenado.
- Predicción de múltiples transiciones de fase en un campo magnético.
Conclusiones:
- El hidrógeno metálico líquido puede ser un nuevo fluido cuántico con propiedades únicas.
- Su comportamiento bajo campos magnéticos sugiere transiciones de fase complejas.
- Se necesita más investigación experimental y teórica para confirmar estos hallazgos.
Videos de Conceptos Relacionados
Phase Transitions
65
A phase transition is the process in which a substance changes from one state of matter to another, like from a solid to a liquid, liquid to gas, or vice versa, at a specific temperature and under given pressure conditions. This change is spontaneous and is affected by alterations in temperature and pressure. These parameters impact the strength of the forces between molecules (intermolecular forces) in the substance.During a phase transition, both the initial and final phases of the substance...
65
Superconductor
2.1K
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...
2.1K
Types Of Superconductors
1.8K
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...
1.8K
Phase Transitions
23.7K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
23.7K
Phase Transitions: Melting and Freezing
15.6K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
15.6K
Phase Transitions: Sublimation and Deposition
20.9K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
20.9K

