Resistive switching in high-density nanodevices fabricated by block copolymer self-assembly

ACS Nano
Jacopo FrascaroliSabina Spiga

Abstract

Bipolar resistive switching memories based on metal oxides offer a great potential in terms of simple process integration, memory performance, and scalability. In view of ultrahigh density memory applications, a reduced device size is not the only requirement, as the distance between different devices is a key parameter. By exploiting a bottom-up fabrication approach based on block copolymer self-assembling, we obtained the parallel production of bilayer Pt/Ti top electrodes arranged in periodic arrays over the HfO2/TiN surface, building memory devices with a diameter of 28 nm and a density of 5 × 10(10) devices/cm(2). For an electrical characterization, the sharp conducting tip of an atomic force microscope was adopted for a selective addressing of the nanodevices. The presence of devices showing high conductance in the initial state was directly connected with scattered leakage current paths in the bare oxide film, while with bipolar voltage operations we obtained reversible set/reset transitions irrespective of the conductance variability in the initial state. Finally, we disclosed a scalability limit for ultrahigh density memory arrays based on continuous HfO2 thin films, in which a cross-talk between distinct nanodevices c...Continue Reading

References

Nov 2, 2007·Nature Materials·Rainer Waser, Masakazu Aono
Jul 26, 2008·Nature Nanotechnology·J Joshua YangR Stanley Williams
Dec 3, 2009·Chemical Reviews·Ho-Cheol KimWilliam D Hinsberg
Dec 5, 2009·Nano Letters·Augustin J HongKang L Wang
Jan 19, 2010·Nature Nanotechnology·Deok-Hwang KwonCheol Seong Hwang
Feb 12, 2010·Nano Letters·Yeon Sik JungC A Ross
Apr 20, 2010·Nature Materials·Eike LinnRainer Waser
Jul 14, 2012·Reports on Progress in Physics·Doo Seok JeongCheol Seong Hwang
Jul 16, 2013·Nanotechnology·F Ferrarese LupiM Perego
Sep 7, 2013·ACS Nano·Dong Ok ShinSang Ouk Kim
Oct 25, 2013·ACS Applied Materials & Interfaces·Hyunsoo LeeJeong Young Park
Apr 18, 2014·ACS Applied Materials & Interfaces·Federico Ferrarese LupiMichele Perego

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Citations

Oct 30, 2015·Macromolecular Rapid Communications·Tongxin ChangTianbai He
Nov 9, 2016·Frontiers in Neuroscience·Erika CoviSabina Spiga
Apr 12, 2017·ACS Applied Materials & Interfaces·Giulia AprileMichele Perego
Jul 19, 2017·Nanotechnology·Stefano BrivioSabina Spiga
Jul 11, 2018·Nanotechnology·K E González-FloresA Morales-Sánchez
May 10, 2018·Scientific Reports·Jacopo FrascaroliSabina Spiga
Apr 17, 2019·Scientific Reports·Stefano BrivioSabina Spiga
Aug 19, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Pawel W Majewski, Kevin G Yager
May 1, 2021·Nanomaterials·Eleonora CaraFederico Ferrarese Lupi

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