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Related Experiment Videos

Stress aging in the electron glass.

V Orlyanchik1, Z Ovadyahu

  • 1Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel.

Physical Review Letters
|March 5, 2004
PubMed
Summary

Researchers studied aging in indium-oxide films using a new protocol. The excess conductance shows simple aging after exposure to a non-Ohmic electric field, provided the field is not excessively strong.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science

Background:

  • Electron-glass phases exhibit complex dynamics.
  • Understanding aging phenomena is crucial for materials science.

Purpose of the Study:

  • To investigate a novel aging protocol in electron-glass indium-oxide films.
  • To analyze the relaxation dynamics of excess conductance under specific conditions.

Main Methods:

  • Exposure of indium-oxide films to a non-Ohmic electric field (F) for a waiting time (t(w)).
  • Measurement of excess conductance (Delta G) relaxation after restoring Ohmic conditions.

Main Results:

  • The system attempts to reach a steady state during the waiting time.
  • Excess conductance relaxation follows simple aging behavior.
  • This behavior is observed when the applied electric field (F) is not too large.

Conclusions:

  • The new protocol effectively probes aging in electron-glass systems.
  • Simple aging is a robust feature in these films under specific electric field conditions.

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