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相关概念视频

Schottky Barrier Diode01:27

Schottky Barrier Diode

357
Schottky barrier diodes are specialized semiconductor devices characterized by their unique construction. This construction involves combining a metal layer with a moderately doped n-type semiconductor material. This combination leads to the formation of a Schottky barrier, a pivotal element that defines the diode's operational characteristics. The core functionality of Schottky barrier diodes is their capacity to allow current to flow in only one direction due to their distinctive...
357
Diode: Forward bias01:20

Diode: Forward bias

1.0K
In semiconductor devices, diodes play a crucial role in directing current flow, and its operation is primarily categorized into forward bias and reverse bias. A diode is said to be forward-biased when its p-type region is connected to the positive terminal of a battery and its n-type region is linked to the negative terminal. This configuration reduces the potential barrier within the diode, allowing current to flow easily from the p to the n-type region.
The behavior of a diode in forward bias...
1.0K
Diode: Reverse bias01:14

Diode: Reverse bias

732
A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...
732
The Ideal Diode01:15

The Ideal Diode

828
A diode is a semiconductor device that allows current to flow in one direction only, making it a crucial component in electronic circuits for controlling the direction of current flow. An ideal diode is a simplified version of a real diode used to understand how diodes work in circuits. It possesses two terminals: the positive anode and the cathode, which is negative. When a positive voltage is applied to the anode relative to the cathode, the diode is in a forward-biased state, allowing...
828
Zener Diodes01:16

Zener Diodes

421
Zener diodes are specialized semiconductor devices designed to operate in the reverse breakdown region, where they allow current to flow into the cathode, making it positive relative to the anode. This reverse operation distinguishes Zener diodes from conventional diodes and enables their use in various applications, most notably as voltage regulators. One of the defining characteristics of Zener diodes is their nearly vertical I-V (current-voltage) characteristic curve above a certain...
421
Modeling of Diode Reverse Characteristics01:14

Modeling of Diode Reverse Characteristics

277
In electronic circuits, reverse-biased diode configurations are critical for regulating voltage levels. Zener diodes exploit the reverse breakdown phenomenon and exhibit a controlled breakdown at a specific Zener voltage (VZ). They are designed to maintain a constant voltage across their terminals and are commonly used for voltage regulation in circuits.
When a reverse voltage applied to a Zener diode exceeds its breakdown voltage, the diode enters the breakdown region. At this point, the...
277

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相关实验视频

Updated: Jul 4, 2025

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

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

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高温约瑟夫森二极管的使用

Sanat Ghosh1, Vilas Patil2, Amit Basu2

  • 1Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai, India. sanatghosh1996@gmail.com.

Nature materials
|February 6, 2024
PubMed
概括
此摘要是机器生成的。

研究人员在高达77K的扭曲超导体中演示了基于约瑟夫森现象的二极管效应 (JDE). 这一突破为超低散射电路和在液温度下的受保护量子位元提供了潜在的应用.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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Last Updated: Jul 4, 2025

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

7.8K
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

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科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 材料科学 材料科学 材料科学
  • 量子计算是一种量子计算.

背景情况:

  • 超导二极管效应 (SDE) 是一种在缺乏时间逆转和反转对称性的超导体中观察到的非互惠现象.
  • 基于约瑟夫森现象的二极管效应 (JDE) 对于开发受保护的量子比特和超低散射电路至关重要.
  • 现有的JDE演示仅限于低温 (~4K),阻碍了实际应用.

研究的目的:

  • 为了在显著更高的温度下证明JDE,特别是高达77K (液温度).
  • 调查人工约瑟夫森结口中JDE的可调性和潜在机制.

主要方法:

  • 使用扭曲的Bi2Sr2CaCu2O8+δ.的层制造一个人造的约瑟夫森连接.
  • 测量切换电流不对称性以量化JDE.
  • 应用一个小型垂直磁场来调整JDE.

主要成果:

  • 观察到JDE的持续时间高达77K.
  • 最大的JDE发生在45°扭转角度.
  • 在20K时实现了60%的大不对称性.
  • 不对称性可以通过一个小的垂直磁场来调整.

结论:

  • 在液温度下证明了JDE,克服了以前的低温限制.
  • 确定了约瑟夫森和阿布里科索夫旋之间的相互作用作为JDE的机制.
  • 为在更高温度下运行的超导约瑟夫森电路铺平了道路.