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Related Concept Videos

Types Of Superconductors01:28

Types Of Superconductors

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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...
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Superconductor01:24

Superconductor

1.1K
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...
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Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

12.2K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
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Phase Transitions: Sublimation and Deposition02:33

Phase Transitions: Sublimation and Deposition

16.6K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
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Phase Diagram01:19

Phase Diagram

5.7K
The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).
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Theory of Metallic Conduction01:17

Theory of Metallic Conduction

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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,...
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Related Experiment Video

Updated: May 24, 2025

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Field-Induced Phase Transitions in Cuprate Superconductors for Cryogenic in-Memory Computing.

Thomas Günkel1, Jordi Alcalà1, Alejandro Fernández1

  • 1Insititut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, Bellaterra, 08193, Spain.

Small (Weinheim an Der Bergstrasse, Germany)
|March 3, 2025
PubMed
Summary
This summary is machine-generated.

This study explores YBCO/LSMO superconducting structures for energy-efficient cryogenic memory. Hole-induced phase transitions drive memristive switching, enabling high-performance in-memory computing at low temperatures.

Keywords:
compact modelcryogenic memristorhigh‐temperature superconductormetal‐insulator transitionneuromorphic computing

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Superconducting Electronics

Background:

  • Energy-efficient cryogenic memory is crucial for quantum computing and superconducting electronics.
  • Neuromorphic systems offer superior energy efficiency for in-memory computing.
  • Strongly correlated oxides with Mott transitions are promising for analog memory.

Purpose of the Study:

  • Investigate YBCO/LSMO superconducting structures for high-performance cryogenic memristive switching.
  • Understand switching mechanisms in these materials at low temperatures.
  • Develop a physics-based model for circuit-level design.

Main Methods:

  • Fabrication of YBCO/LSMO superconducting heterostructures.
  • Characterization of memristive switching effects at cryogenic temperatures.
  • Analysis of switching mechanisms through experimental data.

Main Results:

  • Observed non-volatile multilevel memristive switching in YBCO/LSMO structures.
  • Identified two competing switching mechanisms: oxygen vacancy and electric carrier movement.
  • Determined that hole-induced phase transitions dominate low-temperature switching dynamics.

Conclusions:

  • YBCO/LSMO structures show potential for high-performance cryogenic memory.
  • Understanding switching mechanisms is key to optimizing device performance.
  • A validated physics-based model facilitates circuit design for neuromorphic applications.