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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...
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,...
Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.

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Related Experiment Video

Updated: Jun 5, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

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Light-induced superconductivity in a stripe-ordered cuprate.

D Fausti1, R I Tobey, N Dean

  • 1Max Planck Research Department for Structural Dynamics, University of Hamburg-Centre for Free Electron Laser Science-Hamburg, Germany. daniele.fausti@mpsd.cfel.de

Science (New York, N.Y.)
|January 15, 2011
PubMed
Summary
This summary is machine-generated.

Researchers induced superconductivity in a stripe-ordered cuprate using ultrafast laser pulses. This transient superconducting phase formed in picoseconds, challenging existing theories on stripe order and high-temperature superconductivity.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Materials

Background:

  • High-temperature cuprate superconductors exhibit complex interplay between spin/charge order and superconductivity.
  • One-dimensional "striped" spin and charge order are particularly intriguing features in these materials.

Purpose of the Study:

  • To investigate the dynamic relationship between stripe order and superconductivity.
  • To explore the possibility of inducing superconductivity in a non-superconducting stripe-ordered cuprate.

Main Methods:

  • Utilized mid-infrared femtosecond laser pulses to excite the material La(1.675)Eu(0.2)Sr(0.125)CuO(4).
  • Observed changes in c-axis optical properties, specifically the appearance of Josephson plasma resonance, to detect coherent interlayer transport.

Main Results:

  • Achieved transient three-dimensional superconductivity in the stripe-ordered compound.
  • Observed the prompt emergence of coherent interlayer transport, evidenced by Josephson plasma resonance.
  • Estimated the superconducting phase formation time to be within 1 to 2 picoseconds, significantly faster than anticipated.

Conclusions:

  • Demonstrated ultrafast induction of superconductivity in a stripe-ordered cuprate.
  • The rapid formation of the superconducting state imposes new constraints on theoretical models of stripe order.
  • Highlights the potential for dynamic control over electronic phases in complex materials.