Modulation of the electrical properties of VO₂ nanobeams using an ionic liquid as a gating medium

Nano Letters
Heng JiDouglas Natelson

Abstract

Vanadium dioxide (VO(2)) is a strongly correlated transition metal oxide with a dramatic metal-insulator transition at 67 °C. Researchers have long been interested in manipulating this transition via the field effect. Here we report attempts to modulate this transition in single-crystal VO(2) nanowires via electrochemical gating using ionic liquids. Stray water contamination in the ionic liquid leads to large, slow, hysteretic conductance responses to changes in the gate potential, allowing tuning of the activation energy of the conductance in the insulating state. We suggest that these changes are the result of electrochemical doping via hydrogen. In the absence of this chemical effect, gate response is minimal, suggesting that significant field-effect modulation of the metal-insulator transition is not possible, at least along the crystallographic directions relevant in these nanowires.

References

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Citations

Aug 28, 2013·Nano Letters·Mingyang LiStuart S P Parkin
Feb 6, 2015·Nano Letters·You ZhouShriram Ramanathan
Sep 5, 2014·ACS Applied Materials & Interfaces·Andrew C LangMitra L Taheri
Mar 10, 2015·ACS Applied Materials & Interfaces·F H ChenZ Y Wu
Oct 14, 2014·Scientific Reports·Hee Taek YiVitaly Podzorov
Nov 21, 2015·Scientific Reports·Tsubasa SasakiHidekazu Tanaka
May 16, 2014·Journal of the American Chemical Society·Yaroslav FilinchukDouglas Natelson
Dec 29, 2016·Proceedings of the National Academy of Sciences of the United States of America·Ana M Perez-MuñozAllen M Goldman
Jul 18, 2018·Advanced Materials·Bhagwati PrasadJochen Mannhart
Aug 16, 2012·Advanced Materials·Emilia MorosanQimiao Si
Apr 13, 2019·Proceedings of the National Academy of Sciences of the United States of America·Pavel SalevIvan K Schuller
Dec 14, 2018·Nature Materials·Chris Leighton
Nov 4, 2016·Advanced Materials·Viet Phuong Pham, Geun Young Yeom
Sep 28, 2017·Scientific Reports·Hossein KalhoriPlamen Stamenov
Feb 14, 2018·International Journal of Molecular Sciences·Hasan AtesciJan M van Ruitenbeek
Aug 25, 2020·Science Advances·Jeff WalterChris Leighton
Jun 6, 2017·Advanced Materials·Satria Zulkarnaen BisriYoshihiro Iwasa
Apr 2, 2019·Science Advances·Shi ChenChongwen Zou
Sep 17, 2020·Science Advances·Jeff WalterChris Leighton
Nov 14, 2018·ACS Applied Materials & Interfaces·Wei ZhaoGuang Feng
Dec 8, 2020·ACS Applied Materials & Interfaces·Hon Fai WongChi Wah Leung
Nov 8, 2019·The Journal of Physical Chemistry Letters·Hyojin YoonJunwoo Son

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