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In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
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Related Experiment Video

Updated: Jun 26, 2026

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates
06:49

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates

Published on: April 12, 2019

Magnetic "dead" layer at a complex oxide interface.

Weidong Luo1, Stephen J Pennycook, Sokrates T Pantelides

  • 1Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA. weidong.luo@vanderbilt.edu

Physical Review Letters
|December 31, 2008
PubMed
Summary
This summary is machine-generated.

First-principles calculations reveal a magnetic "dead" layer at La0.67Ca0.33MnO3/YBa2Cu3O7 interfaces. This layer, 2-3 atoms thick, explains conflicting magnetic coupling observations between Mn and Cu atoms.

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11:54

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Published on: February 8, 2018

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Chemistry

Background:

  • Interfaces between complex oxide materials like La0.67Ca0.33MnO3 (LCMO) and YBa2Cu3O7 (YBCO) exhibit unique electronic and magnetic properties.
  • Previous magnetic measurements at LCMO/YBCO interfaces yielded ambiguous results, with interpretations including a magnetic "dead" layer or antiparallel magnetic moments.

Purpose of the Study:

  • To elucidate the magnetic interactions at the LCMO/YBCO interface using first-principles calculations.
  • To determine the nature and extent of magnetic phenomena, such as a "dead" layer, near the interface.

Main Methods:

  • Density-functional theory (DFT) calculations were employed.
  • Calculations focused on position-dependent magnetic couplings between manganese (Mn) atoms within the first few layers of LCMO adjacent to the YBCO interface.

Main Results:

  • First-principles calculations revealed that magnetic couplings between Mn atoms in the initial layers near the interface are weak, exhibiting either ferromagnetic or antiferromagnetic behavior.
  • The computational results strongly support the existence of a magnetic "dead" layer, approximately 2-3 atomic layers thick, at the LCMO side of the interface.

Conclusions:

  • The study confirms the presence of a magnetic "dead" layer at the La0.67Ca0.33MnO3/YBa2Cu3O7 interface.
  • This finding reconciles the conflicting interpretations of experimental magnetic measurements, providing a clear explanation for the observed phenomena.