We report on the fabrication and measurements of platinum-self-aligned nanogap devices containing cubed iron (core)/iron oxide (shell) nanoparticles (NPs) with two average different sizes (13 and 17 nm). The nanoparticles are deposited by means of a cluster gun technique. Their trapping across the nanogap is demonstrated by comparing the current vs voltage characteristics (I-Vs) before and after the deposition. At low temperature, the I-Vs can be well fitted to the Korotkov and Nazarov Coulomb blockade model, which captures the coexistence of single-electron tunneling and tunnel barrier suppression upon a bias voltage increase. The measurements thus show that Coulomb-blockaded devices can be made with a nanoparticle cluster source, which extends the existing possibilities to fabricate such devices to those in which it is very challenging to reduce the usual NP agglomeration given by a solution method.
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5 August 2019
Research Article|
August 07 2019
Trapping and electrical characterization of single core/shell iron-based nanoparticles in self-aligned nanogaps
Jacqueline Labra-Muñoz
;
Jacqueline Labra-Muñoz
1
Kavli Institute of Nanoscience, Delft University of Technology
, Lorentzweg 1, 2628 CJ Delft, The Netherlands
2
Electrical Engineering Department, Faculty of Physical and Mathematical Sciences, University of Chile
, Av. Tupper 2007, Santiago, Chile
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Zorica Konstantinović
;
Zorica Konstantinović
3
Center for Solid State Physics and New Materials, Institute of Physics Belgrade, University of Belgrade
, Pregrevica 118, 11080 Belgrade, Serbia
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Lluis Balcells
;
Lluis Balcells
4
Institut de Ciència de Materials de Barcelona, ICMAB-CSIC
, Campus de la UAB, 08193 Bellaterra, Spain
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Alberto Pomar
;
Alberto Pomar
4
Institut de Ciència de Materials de Barcelona, ICMAB-CSIC
, Campus de la UAB, 08193 Bellaterra, Spain
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Herre S. J. van der Zant
;
Herre S. J. van der Zant
1
Kavli Institute of Nanoscience, Delft University of Technology
, Lorentzweg 1, 2628 CJ Delft, The Netherlands
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Diana Dulić
Diana Dulić
a)
5
Physics Department, Faculty of Physical and Mathematical Sciences, University of Chile
, Av. Blanco Encalada 2800, Santiago, Chile
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a)
Electronic mail: ddulic@ing.uchile.cl
Appl. Phys. Lett. 115, 063104 (2019)
Article history
Received:
February 28 2019
Accepted:
July 12 2019
Citation
Jacqueline Labra-Muñoz, Zorica Konstantinović, Lluis Balcells, Alberto Pomar, Herre S. J. van der Zant, Diana Dulić; Trapping and electrical characterization of single core/shell iron-based nanoparticles in self-aligned nanogaps. Appl. Phys. Lett. 5 August 2019; 115 (6): 063104. https://doi.org/10.1063/1.5094352
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