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Related Concept Videos

MOS Capacitor01:25

MOS Capacitor

A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
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Related Experiment Video

Updated: May 8, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
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Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

A current-driven single-atom memory.

C Schirm1, M Matt, F Pauly

  • 1Department of Physics, University of Konstanz, D-78457 Konstanz, Germany.

Nature Nanotechnology
|September 3, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a reliable atomic-scale switch using a two-terminal metallic contact. This novel switch, toggled by atom rearrangement, offers potential for non-volatile data storage in future nanoelectronic devices.

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Area of Science:

  • Nanotechnology
  • Atomic-scale electronics
  • Quantum transport

Background:

  • Miniaturization of electronic devices to atomic scale is a key goal in nanotechnology.
  • Traditional three-terminal switches are difficult to implement at the atomic scale.

Purpose of the Study:

  • To demonstrate a reliable and fatigue-resistant atomic-scale switch.
  • To explore the potential of two-terminal devices for information storage.

Main Methods:

  • Fabrication of an aluminum atomic contact using electromigration.
  • Characterization of conductance switching using superconductivity-induced nonlinearities.
  • Theoretical analysis using molecular dynamics and quantum transport calculations.

Main Results:

  • Demonstrated a two-terminal atomic contact functioning as a switch with two distinct conductance states.
  • Showcased reliable and fatigue-resistant switching behavior.
  • Identified reversible single-atom rearrangement as the switching mechanism.

Conclusions:

  • The developed two-terminal atomic switch offers a viable alternative to three-terminal devices at the nanoscale.
  • Its hysteretic behavior enables its use as a non-volatile information storage element.
  • This work paves the way for future atomic-scale memory devices.