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자연과학대학
물리학전공
Journal papers
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Occurrence of both unipolar memory and threshold resistance switching in a NiO film
Title
Occurrence of both unipolar memory and threshold resistance switching in a NiO film
Authors
Chang S.H.
;
Lee J.S.
;
Chae S.C.
;
Lee S.B.
;
Liu C.
;
Kahng B.
;
Kim D.-W.
;
Noh T.W.
Ewha Authors
김동욱
SCOPUS Author ID
김동욱
Issue Date
2009
Journal Title
Physical Review Letters
ISSN
0031-9007
Citation
Physical Review Letters vol. 102, no. 2
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
We observed two types of reversible resistance switching (RS) effects in a NiO film: memory RS at low temperature and threshold RS at high temperature. We were able to control the type of RS effects by thermal cycling. These phenomena were explained using a new dynamic percolation model that can describe the rupture and formation of conducting filaments. We showed that the RS effects are governed by the thermal stability of the filaments, which arise from competition between Joule heating and thermal dissipation. This work provides us understandings on basic mechanism of the RS effects and their interrelation. © 2009 The American Physical Society.
DOI
10.1103/PhysRevLett.102.026801
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