Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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...
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...
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,...
Electrostatic Boundary Conditions01:16

Electrostatic Boundary Conditions

Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...

You might also read

Related Articles

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

Sort by
Same author

Sleep Duration Associations with CSF-Tissue Coupling Flexibility and Circadian Synchronization: An Observational Study of Glymphatic-Related Dynamics.

Sleep·2026
Same author

Photoinduced Metal-to-Insulator Transitions in 2D Moiré Devices.

Physical review letters·2026
Same author

Observation of Excitonic Instability in a Monolayer Ta<sub>2</sub>NiSe<sub>5</sub> With Strain Disorder.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Imaging the flat bands of magic-angle graphene reshaped by interactions.

Nature·2026
Same author

Angle evolution of the superconducting phase diagram in twisted bilayer WSe<sub>2</sub>.

Nature·2026
Same author

Revealing Electron-Electron Interactions in Graphene at Room Temperature with a Quantum Twisting Microscope.

Nano letters·2026
Same journal

High-Entropy Alloy Nanomaterials with Well-Designed Nanostructures for Electrocatalytic Applications.

Nano letters·2026
Same journal

Symmetrical Tetravalent Aptamer-Protein Conjugate with Ultrahigh <i>In Vivo</i> Stability for Targeted Cancer Imaging and Therapy.

Nano letters·2026
Same journal

Heterogeneous Reactivity of Palladium Nanoparticles Revealed by Wavelength-Resolved Interferometric Scattering.

Nano letters·2026
Same journal

Protonation-Gated Hydrogen Evolution Enabled by Pyridinic Nitrogen on Graphene Edges.

Nano letters·2026
Same journal

Ligand Engineering of Dithiolate-Protected Au<sub>24</sub>Pt Nanoclusters for Improved Thermocatalytic Activity.

Nano letters·2026
Same journal

Correction to "Switchable Altermagnetism Induced by Polyhedral Rotation Distortion".

Nano letters·2026
See all related articles

Related Experiment Video

Updated: May 23, 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

Prepatterned Superconducting Contacts for Clean Superconductor-Topological Material Interfaces Enabling Long-Range

Yong-Bin Choi1,2, Chang-Won Choi3, Luke Holtzman4

  • 1Department of Physics, Pohang University of Science and Technology, Pohang-si, Gyeongsangbuk-do 37673, Republic of Korea.

Nano Letters
|May 22, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method for fabricating superconducting devices using topological materials (TMs). This technique improves interface quality, leading to enhanced performance in Josephson junctions and enabling reproducible, large-scale platforms.

Keywords:
Bi1.5Sb0.5Te1.7Se1.3 (BSTS)Josephson junctionsPrepatterned superconducting contactsSuperconducting proximity effectTopological materialsTungsten ditelluride (WTe2)

More Related Videos

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

Fabrication and Characterization of Superconducting Resonators
10:26

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

Related Experiment Videos

Last Updated: May 23, 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

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

Fabrication and Characterization of Superconducting Resonators
10:26

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Information Science

Background:

  • Achieving phase-coherent superconducting proximity in topological materials (TMs) is crucial for quantum applications.
  • Conventional top-contact fabrication methods often lead to degraded superconductor-topological material (SC-TM) interfaces due to oxidation and disorder.

Purpose of the Study:

  • To introduce and validate a novel prepatterned superconducting bottom-contact architecture for vdW TMs.
  • To overcome the limitations of conventional fabrication techniques and improve SC-TM interface quality.

Main Methods:

  • Fabrication of MoRe/Au superconducting bottom contacts prior to van der Waals (vdW) crystal transfer.
  • Characterization of WTe2- and Bi1.5Sb0.5Te1.7Se1.3-based Josephson junctions using the new architecture.
  • Interface analysis using cross-sectional scanning transmission electron microscopy/energy-dispersive spectroscopy.

Main Results:

  • The prepatterned bottom-contact architecture yields systematically larger IcRN values compared to top contacts.
  • Demonstrated longer-ranged superconducting coupling in Josephson junctions.
  • Revealed atomically abrupt and chemically well-separated SC-TM interfaces via advanced microscopy.

Conclusions:

  • The prepatterned superconducting bottom-contact approach provides a practical and reproducible method for fabricating high-performance Josephson junctions in vdW TMs.
  • This architecture is essential for developing micrometer-scale Josephson platforms for topological quantum technologies.