Skip to main content

Hybrid Inorganic-Organic NanoElectronics

Final Report Summary - HI-ONE (Hybrid Inorganic-Organic NanoElectronics)

In the interdisciplinary project HI-ONE inorganic and organic materials have been combined to study novel nanoelectronic structures and physical phenomena.
We have demonstrated a method for doping a gold film with localized magnetic moments that involves depositing a monolayer of a metal terpyridine complex onto the film [1,2]. The metal ions in the complexes can be cobalt or zinc, and the concentration of magnetic impurities in the gold film can be controlled by varying the relative amounts of cobalt complexes (which carry a spin) and zinc complexes (which have zero spin). Kondo and weak localization measurements demonstrate that the magnetic impurity concentration can be systematically varied up to ∼800 ppm without any sign of inter-impurity interaction.

Systems featuring large magnetoresistance (MR) at room temperature and in small magnetic fields are strongly sought-after due to their potential for magnetic field sensing and data storage. Usually, the magnetic properties of materials are exploited to achieve large MR. We have discovered an exceptionally large, room-temperature, small-field MR effect in 1D, non-magnetic systems of molecular wires self-assembled in a zeolite host crystal [3]. This ultrahigh MR effect is ascribed to the dramatic consequence of spin blockade in 1D electron transport.

Nonlocality of nature is well studied by now but yet is not understood completely. We demonstrate that, despite the diffusive motion of electrons, nonlocal quantum correlations can also be observed and controlled in normal metals and be even more pronounced than for ballistic systems [4]. We have also succeeded in bottom-up fabricated single-electron transistors (SETs) using inorganic and organic building blocks showing clear Coulomb blockade[5].

Two ERC Proof of Concept Grants (GOMBS and HYMEDNA) were granted based on HI-ONE. Both projects prepare the commercialization of ultrasensitive point-of-care biosensors for early-stage detection of life-threatening diseases.

[1] T. Gang et al., Nature Nanotechnology 7, 232 (2012)
[2] D. Ataç et al., Nanotechnology 24, 3752014 (2013).
[3] R.N. Mahato, H. Lülf, M.H. Siekman, S.P. Kersten, P.A. Bobbert, M.P. de Jong, L. De Cola and W.G. van der Wiel, Science 341, 257 (2013).
[4] E. Strambini, K.S. Makarenko, M.P. de Jong and W.G. van der Wiel, manuscript in preparation.
[5] K.S. Makarenko, Z. Liu, W.G. van der Wiel et al., manuscript in preparation.