Abstract
The resistance switching dynamics of TiN/HfO2/Pt devices is analyzed in this paper. When biased with a voltage ramp of appropriate polarity, the devices experience SET transitions from high to low resistance states in an abrupt manner, which allows identifying a threshold voltage. However, we find that the stimulation with trains of identical pulses at voltages near the threshold results in a gradual SET transition, whereby the resistive state visits a continuum of intermediate levels as it approaches some low resistance state limit. On the contrary, RESET transitions from low to high resistance states proceed in a gradual way under voltage ramp stimulation, while gradual resistance changes driven by trains of identical spikes cover only a limited resistance window. The results are discussed in terms of the relations among the thermo-electrochemical effects of Joule heating, ion mobility, and resistance change, which provide positive and negative closed loop processes in SET and RESET, respectively. Furthermore, the effect of the competition between opposite tendencies of filament dissolution and formation at opposite metal/HfO2 interfaces is discussed as an additional ingredient affecting the switching dynamics.
Authors
6
- S. Brivio (first)
- E. Covi (additional)
- A. Serb (additional)
- T. Prodromakis (additional)
- M. Fanciulli (additional)
- S. Spiga (additional)
References
34
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(2010)
Dates
Type | When |
---|---|
Created | 8 years, 11 months ago (Sept. 27, 2016, 1 p.m.) |
Deposited | 2 years, 2 months ago (June 17, 2023, 10:09 p.m.) |
Indexed | 1 month ago (July 30, 2025, 10:04 a.m.) |
Issued | 8 years, 11 months ago (Sept. 26, 2016) |
Published | 8 years, 11 months ago (Sept. 26, 2016) |
Published Online | 8 years, 11 months ago (Sept. 27, 2016) |
Published Print | 8 years, 11 months ago (Sept. 26, 2016) |
Funders
1
European Commission
10.13039/501100000780
Region: Europe
gov (National government)
Labels
26
- European Union
- Comisión Europea
- Europäische Kommission
- EU-Kommissionen
- Euroopa Komisjoni
- Ευρωπαϊκής Επιτροπής
- Европейската комисия
- Evropské komise
- Commission européenne
- Choimisiúin Eorpaigh
- Europskoj komisiji
- Commissione europea
- La Commissione europea
- Eiropas Komisiju
- Europos Komisijos
- Európai Bizottságról
- Europese Commissie
- Komisja Europejska
- Comissão Europeia
- Comisia Europeană
- Európskej komisii
- Evropski komisiji
- Euroopan komission
- Europeiska kommissionen
- EC
- EU
Awards
1
- 612058
@article{Brivio_2016, title={Experimental study of gradual/abrupt dynamics of HfO2-based memristive devices}, volume={109}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.4963675}, DOI={10.1063/1.4963675}, number={13}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Brivio, S. and Covi, E. and Serb, A. and Prodromakis, T. and Fanciulli, M. and Spiga, S.}, year={2016}, month=sep }