Publisher's Note: Quantum Mechanical Single-Gold-Nanocluster Electroluminescent Light Source at Room Temperature [Phys. Rev. Lett.<b>93</b>, 147402 (2004)]

González, José Ignacio Rodríguez; Lee, Tae Hee; Barnes, Michael D.; Antoku, Yasuko; Dickson, Robert M.

doi:10.1103/physrevlett.93.159903

Cited by 26 publications

(43 citation statements)

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“…Most likely, small islands in the form of gold grains are present in the gap region. A similar conclusion has been drawn by Consalez et al 19 who detect fluorescence from small grains produced by electromigration and by Houck et al 15 who report on the Kondo effect in bare gold electro-migrated junctions. The appearance of nanometer-sized gold grains near the gap is a problem if one wants to distinguish transport through molecules from that through grains: the energies to add or withdraw an electron may be of the same order in both cases.…”

Section: Current-voltage Characteristicssupporting

confidence: 83%

Molecular three-terminal devices: fabrication and measurements

et al. 2006

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Incorporation of a third, gate electrode in the device geometry of molecular junctions is necessary to identify the transport mechanism. At present, the most popular technique to fabricate three-terminal molecular devices makes use of electromigration. Although it is a statistical process, we show that control over the gap resistance can be obtained. A detailed analysis of the current-voltage characteristics of gaps without molecules, however, shows that they reveal features that can mistakenly be attributed to molecular transport. This observation raises questions about which gaps with molecules can be disregarded and which not. We show that electrical characteristics can be controlled by the rational design of the molecular bridge and that vibrational modes probed by electrical transport are of potential interest as molecular fingerprints.

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Section: Current-voltage Characteristicssupporting

confidence: 83%

Molecular three-terminal devices: fabrication and measurements

et al. 2006

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“…Similarly, no Kondo resonances were observed in over 500 control junctions with no molecules, alkane chains, or other control molecules not containing unpaired spins. This is particularly important in light of recent work [15,42,43] that demonstrates that it is possible to form metal nanoclusters on the molecular scale via electromigration, and that structures can show Kondo physics, albeit with much lower ($7 K) Kondo temperatures [42]. We also note that such Kondo observations in all-metal devices are extremely sensitive to the details of the electromigration method, and that devices fabricated without the specific active feedback used in Ref.…”

Section: The Kondo Resonance and Strong Molecule-metal Couplingmentioning

confidence: 97%

Single-molecule transistors: Electron transfer in the solid state

Natelson

Ciszek

et al. 2006

Chemical Physics

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Single-molecule transistors (SMTs) incorporating individual small molecules are unique tools for examining the fundamental physics and chemistry of electronic transport in molecular systems at the single nanometer scale. We describe the fabrication and characterization of such devices, and the synthesis and surface attachment chemistry of novel transition metal complexes that have been incorporated into such SMTs. We present gate-modulated inelastic electron tunneling vibrational spectroscopy of single molecules, strong Kondo physics (T K $ 75 K) as evidence of excellent molecule/electrode electronic coupling, and a demonstration that covalent attachment chemistry can produce SMTs that survive repeated thermal cycling to room temperature. We conclude with a look ahead at the prospects for these nanoscale systems.

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“…We note that the presence of such nanoparticles may lead to Coulomb blockade effects. 13,14,20,21 From Fig. 2͑b͒ we conclude that the breakdown process has taken place in an uncontrolled manner, leading to high local temperatures ͑and fields͒.…”

Section: A Excessive Heating During Electromigrationmentioning

confidence: 99%

The role of Joule heating in the formation of nanogaps by electromigration

Trouwborst

Molen

Wees

2006

Journal of Applied Physics

135

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Link to publication in University of Groningen/UMCG research database Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. We investigate the formation of nanogaps in gold wires due to electromigration. We show that the breaking process will not start until a local temperature of typically 400 K is reached by Joule heating. This value is rather independent of the temperature of the sample environment ͑4.2-295 K͒. Furthermore, we demonstrate that the breaking dynamics can be controlled by minimizing the total series resistance of the system. In this way, the local temperature rise just before breakdown is limited and melting effects are prevented. Hence, electrodes with gaps Ͻ2 nm are easily made, without the need of active feedback. For optimized samples, we observe quantized conductance steps prior to the gap formation.

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Publisher's Note: Quantum Mechanical Single-Gold-Nanocluster Electroluminescent Light Source at Room Temperature [Phys. Rev. Lett.93, 147402 (2004)]

Cited by 26 publications

References 0 publications

Molecular three-terminal devices: fabrication and measurements

Molecular three-terminal devices: fabrication and measurements

Single-molecule transistors: Electron transfer in the solid state

The role of Joule heating in the formation of nanogaps by electromigration

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