Bulk and surface nucleation processes in Ag2S conductance switches

M. Morales-Masis, S. J. Van Der Molen, Tsuyoshi Hasegawa, J. M. Van Ruitenbeek

研究成果: Article

27 引用 (Scopus)

抄録

We studied metallic Ag formation inside and on the surface of Ag 2S thin films, induced by the electric field created with a scanning tunnel microscope (STM) tip. Two clear regimes were observed: cluster formation on the surface at low bias voltages, and full conductance switching at higher bias voltages (V>70 mV). The bias voltage at which this transition is observed is in agreement with the known threshold voltage for conductance switching at room temperature. We propose a model for the cluster formation at low bias voltage. Scaling of the measured data with the proposed model indicates that the process takes place near steady state, but depends on the STM tip geometry. The growth of the clusters is confirmed by tip retraction measurements and topography scans. This study provides improved understanding of the physical mechanisms that drive conductance switching in solid electrolyte memristive devices.

元の言語English
記事番号115310
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
84
発行部数11
DOI
出版物ステータスPublished - 2011 9 19
外部発表Yes

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Bias voltage
Nucleation
switches
Switches
nucleation
electric potential
tunnels
Tunnels
Microscopes
microscopes
Scanning
scanning
Solid electrolytes
solid electrolytes
Threshold voltage
threshold voltage
Topography
topography
Electric fields
scaling

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

これを引用

Bulk and surface nucleation processes in Ag2S conductance switches. / Morales-Masis, M.; Van Der Molen, S. J.; Hasegawa, Tsuyoshi; Van Ruitenbeek, J. M.

:: Physical Review B - Condensed Matter and Materials Physics, 巻 84, 番号 11, 115310, 19.09.2011.

研究成果: Article

Morales-Masis, M. ; Van Der Molen, S. J. ; Hasegawa, Tsuyoshi ; Van Ruitenbeek, J. M. / Bulk and surface nucleation processes in Ag2S conductance switches. :: Physical Review B - Condensed Matter and Materials Physics. 2011 ; 巻 84, 番号 11.
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