関連する実験動画

Updated: Jul 12, 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

高過渡温度超伝導体における電流消耗の排除

J Z Sun, B Lairson, C B Eom

    Science (New York, N.Y.)
    |January 19, 1990
    PubMed
    まとめ

    YBa(2)Cu(3)O(7) の薄膜における磁気遮断電流の緩解は,臨界電流密度以下で動作することで減少します. この発見は,恒定電流磁石の適用において極めて重要であり,初期崩壊にもかかわらず安定性を示しています.

    さらに関連する動画

    Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride04:51

    Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

    Published on: July 8, 2021

    High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings09:01

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

    Published on: April 16, 2017

    関連する概念動画

    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...
    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...
    Biasing of Metal-Semiconductor Junctions01:27

    Biasing of Metal-Semiconductor Junctions

    Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
    In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
    Theory of Metallic Conduction01:17

    Theory of Metallic Conduction

    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,...
    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...
    Significance of Displacement Current01:28

    Significance of Displacement Current

    A displacement current is analogous to a real current in Ampère's law, participating in Ampère's law the same way as the usual conduction current. However, it is produced by a changing electric field. Displacement current is defined in terms of a time-varying electric field, and also has an associated displacement current density. By adding a term accounting for displacement current, Maxwell modified the existing Ampère's law, which is now called generalized Ampère's law.