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Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
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Room-temperature memristive switching between charge density wave states.

R Venturini1,2, M Rupnik3,4, J Gašperlin5,3

  • 1Jozef Stefan Institute, Ljubljana, Slovenia. rok.venturini@psi.ch.

Nature Communications
|May 20, 2026
PubMed
Summary

Researchers demonstrated electrical pulse switching of charge density wave (CDW) states in EuTe4 at room temperature. This breakthrough enables stable, non-volatile resistance switching for potential use in energy-efficient memristor devices.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science

Background:

  • Charge density wave (CDW) states are crucial for novel electronic devices.
  • Previous CDW switching was limited to cryogenic temperatures, hindering practical applications.

Purpose of the Study:

  • Investigate the potential of EuTe4 for room-temperature CDW-based memory devices.
  • Explore electrical pulse-induced switching of CDW states in EuTe4.

Main Methods:

  • Utilized electrical pulses to induce non-equilibrium electronic states in EuTe4.
  • Performed resistance switching experiments across a wide temperature range (6 K to 400 K).
  • Conducted theoretical calculations to understand the CDW bistability mechanism.

Main Results:

  • Achieved stable, non-volatile resistance switching of CDW states in EuTe4 from 6 K to 400 K.
  • Demonstrated non-thermal switching via electrical pulses, reversible with thermal erase.
  • Showcased tunable resistance by pulse voltage, confirming memristor behavior.
  • Calculations revealed bilayer CDW stability and single-layer CDW bistability.

Conclusions:

  • EuTe4 exhibits promising properties for room-temperature memristor applications.
  • Low-voltage, fast, and energy-efficient CDW switching is feasible in EuTe4.
  • The non-thermal switching mechanism opens new avenues for electronic device design.