Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Types Of Superconductors

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...

Superconductor

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 Semiconductors

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...

Diode: Reverse bias

Diode: Reverse bias

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...

Schottky Barrier Diode

Schottky Barrier Diode

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...

Small-signal Diode Model

Small-signal Diode Model

In analyzing the behavior of diodes in circuits, the relationship between the current through a diode and the voltage across it is of particular interest, especially when considering the effect of a direct current (DC) bias voltage. When applied, this DC bias influences the diode's operating point, known as the Q point, around which the current-voltage (I-V) characteristic of the diode exhibits exponential behavior. Introducing a small, time-varying signal on top of this bias aids in...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Nonreciprocal Current-Induced Zero-Resistance State in Valley-Polarized Superconductors.

Physical review letters·2025

Same author

Misfit layered superconductor (PbSe)<sub>1.14</sub>(NbSe<sub>2</sub>)<sub>3</sub> with possible layer-selective FFLO state.

Nature communications·2025

Same author

Field-Free Superconducting Diode Effect in Layered Superconductor FeSe.

Physical review letters·2025

Same author

Superconducting Meron Phase in Locally Noncentrosymmetric Superconductors.

Physical review letters·2025

Same author

Magnetic parity violation and parity-time-reversal-symmetric magnets.

Journal of physics. Condensed matter : an Institute of Physics journal·2024

Same author

Fully gapped pairing state in spin-triplet superconductor UTe<sub>2</sub>.

Science advances·2024

Search research articles

Related Experiment Video

Updated: Oct 4, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Intrinsic Superconducting Diode Effect.

Akito Daido¹, Yuhei Ikeda¹, Youichi Yanase^1,2

¹Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.

Physical Review Letters

|February 4, 2022

Summary

We propose an intrinsic mechanism for the superconducting diode effect (SDE), a current nonreciprocity in superconductors. This effect is enhanced at low temperatures and shows field-dependent sign reversals, revealing new superconductor functionalities.

More Related Videos

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

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

Published on: April 16, 2017

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Related Experiment Videos

Last Updated: Oct 4, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

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

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

Published on: April 16, 2017

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Area of Science:

Condensed Matter Physics
Materials Science
Quantum Phenomena

Background:

The superconducting diode effect (SDE) describes the nonreciprocity of critical current in the metal-superconductor transition.
Intrinsic mechanisms, like the depairing current, are crucial for understanding SDE in various superconducting systems.
Recent experiments have spurred new theoretical investigations into SDE.

Purpose of the Study:

To propose an intrinsic mechanism for the superconducting diode effect (SDE).
To elucidate the temperature and magnetic field dependence of the nonreciprocal depairing current.
To explore the implications of intrinsic SDE for noncentrosymmetric superconductors.

Main Methods:

Theoretical modeling of the depairing current in superconductors.
Analysis of temperature scaling near the critical temperature.
Investigation of magnetic field effects on critical current nonreciprocity.

Main Results:

An intrinsic mechanism for SDE based on the depairing current is proposed.
The nonreciprocal depairing current exhibits significant enhancement at low temperatures.
Sign reversals of the nonreciprocal critical current were observed with increasing magnetic field.

Conclusions:

The proposed mechanism explains SDE through nonreciprocity of Landau critical momentum and helical superconductivity.
Intrinsic SDE reveals complex phase diagrams and functionalities in noncentrosymmetric superconductors.
This work provides a fundamental understanding of SDE, paving the way for novel superconducting devices.