Observation of resistive switching and diode effect in the conductivity of TiTe2 point contacts

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • O. E. Kvitnitskaya - , NASU - B. Verkin Institute for Low Temperature Physics and Engineering, Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • L. Harnagea - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Indian Institute of Science Education and Research Pune (Autor:in)
  • O. D. Feia - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Kyiv Academic University, NASU - Kurdyumov Institute for Metal Physics (Autor:in)
  • D. V. Efremov - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • B. Büchner - , Exzellenzcluster ct.qmat: Komplexität und Topologie in Quantenmaterialien, Professur für Experimentelle Festkörperphysik (gB/IFW), Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • Yu G. Naidyuk - , NASU - B. Verkin Institute for Low Temperature Physics and Engineering (Autor:in)

Abstract

We measured the I(V) and dV/dI(V) characteristics of TiTe2-based point contacts (PCs) from room to helium temperatures. Features indicating the emergence of charge density wave (CDW) were detected. They represent symmetrical relatively V = 0 maxima in dV/dI(V) around ±150 mV at liquid helium temperatures, which disappear above 150 K, similar to the case of sister CDW compound TiSe2. Applying higher voltages above 200 mV, we observed resistive switching in TiTe2 PCs from a metallic-like low-resistance state to a non-metallic type high-resistance state with a change of resistance by an order of magnitude. A unique diode-like effect was registered in “soft” TiTe2 PCs with hysteretic I(V) at the negative voltage on TiTe2. Discovering the resistive switching and diode effect adds TiTe2 to the transition-metal dichalcogenides, which could be useful in developing non-volatile ReRAM and other upcoming nanotechnologies.

Details

OriginalspracheEnglisch
Seiten (von - bis)951-956
Seitenumfang6
FachzeitschriftFizika Nizkikh Temperatur
Jahrgang51
Ausgabenummer7
PublikationsstatusVeröffentlicht - 2025
Peer-Review-StatusJa

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • charge density wave, diode effect, point contacts, ReRAM material, resistive switching, TiTe, transition-metal dichalcogenides