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Direct Observation of Nanoscale Switching Centers in Metal/Molecule/Metal Structures

Lau, Chun Ning, Stewart, Duncan R., Williams, R. Stanley, Bockrath, Marc·2004·Nano Letters
DOI 10.1021/nl035117a
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Abstract

Conductance switching in metal/molecule/metal structures has attracted tremendous and broad interest. Understanding the switching mechanism, which remained controversial to date, will be vital for engineering nanoscale switches crucial for memory and logic applications. Here we describe a new switching mechanism revealed by a novel scanned-probe technique that images the mechano-electrical response of a Pt/stearic acid/Ti structure switch device. In each image a single switching center, characterized by a nanoscale conductance peak, appeared or disappeared when the device was switched “on” or “off”. Our results strongly indicate that the formation and dissolution of individual nanoscale filaments through the molecular layer give rise to conductance switching in our molecular structures with unusually high on/off ratios (∼10 5 ).

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Metadata

Authors
Lau, C. N., Stewart, D. R., Williams, R. S., & Bockrath, M.
Venue
Nano Letters
Publisher
American Chemical Society (ACS)
Published
2004-03-10
Volume
4
Issue
4
Pages
569-572
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
DOI
10.1021/nl035117a
OpenAlex
W2115475275
Cited by
217
References
0
FWCI
23.87
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Direct Observation of Nanoscale Switching Centers in Metal/Molecule/Metal Structures. https://app.cochat.ai/papers/10.1021/nl035117a
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Lau, C. N., Stewart, D. R., Williams, R. S., & Bockrath, M. (2004). Direct Observation of Nanoscale Switching Centers in Metal/Molecule/Metal Structures. Nano Letters. https://doi.org/10.1021/nl035117a

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