Mechanism of single atom switch on silicon

Quaade, Ulrich; Stokbro, Kurt; Thirstrup, Carsten; Grey, François

doi:10.1016/s0039-6028(98)00560-3

Cited by 47 publications

(57 citation statements)

References 31 publications

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“…It is also noteworthy that the chiral inversion is not a simple rotation or displacement of the whole Pb 3 configuration but rather a complex motion involving two Pb and three Si atoms, where Pb-Si exchanges and Pb-and Si displacements are indeed promoted in concert. This feature is strikingly different from any reported switches involving only single-atom/molecule processes [10][11][12][13][14][15][16][17][18][19][20] , thus being a new type of switch.…”

Section: Resultscontrasting

confidence: 84%

“…Since this pioneering work, extensive studies using STM/AFM have demonstrated a variety of atomic-scale switches composed of not only an adsorbed atom but also adsorbed molecules and native surface atoms. In all cases, reversible switches could be operated in a controlled way through their single-atom/molecule processes such as lateral/vertical displacements [11][12][13][14] , rotational motions [15][16][17] and conformational changes [18][19][20] . Nevertheless, most switches devised thus far need to be operated at cryogenic temperatures, while controllability at roomtemperature (RT) environment is essential for the many practical applications that await this new technology.…”

mentioning

confidence: 99%

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Room-temperature-concerted switch made of a binary atom cluster

et al. 2015

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Single-atom/molecule manipulation for fabricating an atomic-scale switching device is a promising technology for nanoelectronics. So far, scanning probe microscopy studies have demonstrated several atomic-scale switches, mostly in cryogenic environments. Although a high-performance switch at room temperature is essential for practical applications, this remains a challenging obstacle to overcome. Here we report a room-temperature switch composed of a binary atom cluster on the semiconductor surface. Distinctly different types of manipulation techniques enable the construction of an atomically defined binary cluster and the electronic switching of the conformations, either unidirectionally or bidirectionally. The switching process involves a complex rearrangement of multiple atoms in concerted manner. Such a feature is strikingly different from any switches mediated by single-atom/molecule processes that have been previously reported.

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Section: Resultscontrasting

confidence: 84%

mentioning

confidence: 99%

Room-temperature-concerted switch made of a binary atom cluster

et al. 2015

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“…Normalizing the probability of a hopping event to the number of electrons passing through the molecule yields an estimate of ∼5 × 10 -8 /electron, similar to that which has been reported in the case of the tip-induced H-atom switching. 26 We note that intradimer hopping is not observed for pyridine adsorption on the clean surface. This is presumably because of the pinning of the dimer buckling induced by the datively bonded pyridine on the clean Si(100) surface.…”

mentioning

confidence: 78%

“…The single dangling bond features are observed to frequently switch from one side of a dimer to the other, consistent with a tip-induced H-atom hopping process previously reported. 26 Upon dosing with pyridine (Figure 2b), the appearance of the clean dimers is quickly altered, suggesting that a reaction occurred at these sites. In addition to an overall increase in height of these features, a clear asymmetry is seen in both the image and the cross-section (Figure 2d).…”

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confidence: 99%

Selective Adsorption of Pyridine at Isolated Reactive Sites on Si(100)

et al. 2005

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The development of a variety of nanoscale applications 1, 2 requires the fabrication and control of atomic [3][4][5] or molecular switches 6, 7 that can be reversibly operated by light 8 , a short range force 9, 10 , electric current 11,12 or some other external stimulus [13][14][15] . In order for such molecules to be used as electronic components, they should be directly Fig.

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mentioning

confidence: 99%