V2EX supercurrent

Supercurrent

定义 Definition

supercurrent 指“超导电流”:在超导体中流动、几乎没有电阻、可在无外加电压下持续存在的电流(常与量子相位与约瑟夫森效应相关)。

发音 Pronunciation (IPA)

/suprkrnt/

例句 Examples

A supercurrent can flow without resistance in a superconductor.
超导电流可以在超导体中无电阻地流动。

In a Josephson junction, a supercurrent may pass between two superconductors even when no voltage is applied, depending on the phase difference.
在约瑟夫森结中,即使不加电压,超导电流也可能在两个超导体之间通过,这取决于它们的相位差。

词源 Etymology

super-(“超、极度、在……之上”)+ current(“电流/流动”)构成,字面意思是“超常的电流”。该词主要在20世纪随超导研究发展而普及,用来强调这种电流与普通电流不同:几乎不产生电阻损耗,并体现量子性质。

相关词 Related Words

文学与名著用例 Literary Works

  • Introduction to Superconductivity(Michael Tinkham):在讨论超导体的电动力学与相干效应时频繁使用 supercurrent
  • Quantum Theory of Solids(Charles Kittel):涉及超导与凝聚态量子现象章节中出现 supercurrent
  • The Feynman Lectures on Physics(Richard P. Feynman):在介绍低温物理与超导相关内容时会提及与 supercurrent 相近的概念与表述。
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