Research Update: Molecular electronics: The single-molecule switch and transistor

Sotthewes, Kai; Geskin, Victor; Heimbuch, Rene; Kumar, Avijit; Zandvliet, Henricus J.W.

doi:10.1063/1.4855775

Cited by 37 publications

(37 citation statements)

References 35 publications

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“…The eld of molecular electronics aims to investigate and realize elementary electronic devices relying on molecules for future elementary electronic devices. 1,2 One of the essential parameters in charge transport through molecules is the location of the molecular energy levels with respect to the Fermi level. 3,4 A wellestablished method to determine the electronic structure of an electrode-molecule-electrode junction is scanning tunneling spectroscopy, also referred to as current-voltage I(V) spectroscopy.…”

Section: A Introductionmentioning

confidence: 99%

Transition voltage spectroscopy of scanning tunneling microscopy vacuum junctions

et al. 2014

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We have determined the dependence of the transition voltage (minimum in a ln(I/V 2) vs. I/V plot) on the vacuum gap width in ultra-high vacuum scanning tunneling microscopy junctions. We have performed dual bias room temperature experiments with a W tip and Au(111) as well as polycrystalline Pt surfaces. For both type of surfaces the transition voltage decreases linearly with increasing inverse gap width. This is in marked contrast with the standard models for quantum mechanical tunneling, which predict a linear increase of the transition voltage with increasing inverse gap width. This remarkable discrepancy can only be partly explained by the incorporation of an image charge effect and therefore there is a clear need for a revision of the standard models for quantum mechanical tunneling in vacuum scanning tunneling microscopy junctions.

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Section: A Introductionmentioning

confidence: 99%

Transition voltage spectroscopy of scanning tunneling microscopy vacuum junctions

et al. 2014

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“…Nowadays it is carried out the intensive search of possibility to create the electronic circuit elements, which are the individual molecules (switches, transistors, etc.) [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Molecular Transistor Based on the Biphenyl Substituents

Malashenko¹,

Kondratenko²,

Lopatkin³

et al. 2016

J. Nano- Electron. Phys.

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It was investigated the physical processes in the molecules, which have properties required in case of using as molecular switches, transistors, or other electronic elements of future computers. Studies show that in the molecules of biphenyl substituents the angle between the planes of the phenyl rings depends on the magnitude of the applied external electric field. So, the ratio of squares of cosines of the angles between the phenyl groups in the field 0.01 a.u. and without field reaches 18. It significantly changes the ability of electrons to move along the long axis of the molecule. By varying the nature of the substituents, we can obtain the molecule characteristics that make these molecules promising for future using. This effect provides the use of biphenyl substitutes as transistors in electrical circuits constructed on separate molecules.

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“…During the last decades, a striking evolution in the area of molecular spintronic devices and quantum spin transport characteristics of organic molecular junctions 1 2 3 4 5 6 7 8 , has gained an ample enthusiasm. The engineering and the design of electronic transport features of molecular-scale systems has received a distinguished motivation.…”

mentioning

confidence: 99%

“…The engineering and the design of electronic transport features of molecular-scale systems has received a distinguished motivation. This may yield to paramount realistic applications for the molecular electronics, more specifically diodes, wires, quantum dots and molecular transistors 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 . The engineering of spin transport in small conjugated organic molecules 9 10 11 12 13 14 15 16 17 , graphene 17 18 19 20 21 22 23 24 and magnetic molecules 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 , has achieved a tremendous scrutiny because of the significant applications in the molecular spintronic devices.…”

mentioning

confidence: 99%

Spin transport properties of n-polyacene molecules (n = 1–15) connected to Ni surface electrodes: Theoretical analysis

Çalışkan

Laref

2014

Sci Rep

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Using non-equilibrium Green function formalism in conjunction with density functional theory, we explore the spin-polarized transport characteristics of several planar n-acene molecules suspended between two semi-infinite Ni electrodes via the thiol group. We examine the spin-dependence transport on Ni-n-acenes-Ni junctions, while the number of fused benzene rings varies between 1 and 15. Intriguingly, the induced magnetic moments of small acene molecules are higher than that of longer acene rings. The augmentation of fused benzene rings affects both the magnetic and transport features, such as the transmission function and conductance owing to their coupling to the Ni surface contacts via the anchoring group. The interplay between the spin-polarized transport properties, structural configuration and molecular electronic is a fortiori essential in these attractive molecular devices. Thus, this can conduct to the engineering of the electron spin transport in atomistic and molecular junctions. These prominent molecules convincingly infer that the molecular spin valves can conduct to thriving molecular devices.

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Research Update: Molecular electronics: The single-molecule switch and transistor

Cited by 37 publications

References 35 publications

Transition voltage spectroscopy of scanning tunneling microscopy vacuum junctions

Transition voltage spectroscopy of scanning tunneling microscopy vacuum junctions

Molecular Transistor Based on the Biphenyl Substituents

Spin transport properties of n-polyacene molecules (n = 1–15) connected to Ni surface electrodes: Theoretical analysis

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