Atom transfer in the STM double-well potential during a voltage pulse

Budau, P.; Grigorescu, M.

doi:10.1103/physrevb.57.6313

Cited by 10 publications

(13 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An STM manipulation mechanism closed to the adsorption and desorption processes of single atoms and molecules is known as vertical manipulation ( Figure 14) (38,(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53). This process involves the transfer of single atoms or molecules between the tip and substrate and vice versa (Figure 14a).…”

Section: Vertical Manipulationmentioning

confidence: 99%

“…The atom/molecule transfer process can be realized by using an electric field between the tip and sample, by exciting with IET electrons, or by making mechanical contact between the tip and the atom/molecule. This transfer mechanism can be explained by using a model of a double potential well (as demonstrated in Figure 14b) (50,52,53). At an imaging distance-at which the tip is roughly 6Å above the surface-the atom/molecule has two possible stable positions, one at the surface and one at the tip apex.…”

Section: Vertical Manipulationmentioning

confidence: 99%

See 1 more Smart Citation

STM Control of Chemical Reactions: Single-Molecule Synthesis

Hla

Rieder

2003

Annu. Rev. Phys. Chem.

164

119

View full text Add to dashboard Cite

The fascinating advances in single atom/molecule manipulation with a scanning tunneling microscope (STM) tip allow scientists to fabricate atomic-scale structures or to probe chemical and physical properties of matters at an atomic level. Owing to these advances, it has become possible for the basic chemical reaction steps, such as dissociation, diffusion, adsorption, readsorption, and bond-formation processes, to be performed by using the STM tip. Complete sequences of chemical reactions are able to induce at a single-molecule level. New molecules can be constructed from the basic molecular building blocks on a one-molecule-at-a-time basis by using a variety of STM manipulation schemes in a systematic step-by-step manner. These achievements open up entirely new opportunities in nanochemistry and nanochemical technology. In this review, various STM manipulation techniques useful in the single-molecule reaction process are reviewed, and their impact on the future of nanoscience and technology are discussed.

show abstract

Section: Vertical Manipulationmentioning

confidence: 99%

Section: Vertical Manipulationmentioning

confidence: 99%

STM Control of Chemical Reactions: Single-Molecule Synthesis

Hla

Rieder

2003

Annu. Rev. Phys. Chem.

164

119

View full text Add to dashboard Cite

show abstract

“…In our recent paper dedicated to the parametric supersymmetric potentials [13], we introduced a linear-quadraticquartic class of one-parameter asymmetric DWs. In the limiting non-parametric case, such potentials occur as effective potentials at the tip of scanning tunneling microscope in the process of atom transfer during a voltage pulse [14]. The construction of this type of parametric potentials is based on the general Riccati solution obtained by the well-known Bernoulli ansatz from a particular Riccati solution of the form F (x) = (x − 1) 2 − 1.…”

Section: Introductionmentioning

confidence: 99%

Shifted one-parameter supersymmetric family of quartic asymmetric double-well potentials

2014

View full text Add to dashboard Cite

Extending our previous work (Rosu, Mancas, Chen, Ann.Phys. 343 (2014) 87-102), we define supersymmetric partner potentials through a particular Riccati solution of the form F (x) = (x − c) 2 − 1, where c is a real shift parameter, and work out the quartic double-well family of oneparameter isospectral potentials obtained by using the corresponding general Riccati solution. For these parametric double well potentials, we study how the localization properties of the two wells depend on the parameter of the potentials for various values of the shifting parameter. We also consider the supersymmetric parametric family of the first double-well potential in the Razavy chain of double well potentials corresponding to F (x) = 1 2 sinh 2x − 2 (1+ √ 2) sinh 2x (1+ √ 2) cosh 2x+1 , both unshifted and shifted, to test and compare the localization properties.

show abstract

“…We have also investigated the cases = −1 −2 and found, whilst a similar change of variable to what is used here leads to a confluent Heun differential equation [28], attempts at finding closed form solutions are frustrated by the stringent conditions required for confluent Heun polynomials [29] . Whilst the importance of single wells in physics and chemistry is well known, the double-well problem is equally interesting, with applications in areas including double-well tunneling [23], semiconductor heterostructures [24], atom transfer in a scanning tunneling microscope [25], BoseEinstein condensation [26] and instantons [27]. The rest of this work details our search for bound state (E < 0) solutions of Eq.…”

Section: Introductionmentioning

confidence: 99%