Voltage and Redox State Triggered Oxygen Adatom Conductance Switch

Quanzhen Zhang; J. Brndiar; Yuuki Adachi; Martin Konopka; Huan Fei Wen; Masato Miyazaki; Yasuhiro Sugawara; Rui Xu; Zhi Hai Cheng; Hongqian Sang; Yan Jun Li; Lev Kantorovich; Ivan Stich

Voltage and Redox State Triggered Oxygen Adatom Conductance Switch

Quanzhen Zhang, J. Brndiar, Yuuki Adachi, Martin Konopka, Huan Fei Wen, Masato Miyazaki, Yasuhiro Sugawara, Rui Xu, Zhi Hai Cheng, Hongqian Sang, Yan Jun Li, Lev Kantorovich, Ivan Stich

Research output: Contribution to journal › Article › peer-review

Abstract

Switches are omnipresent in all electronic de- vices. Miniaturization reduced the size of switches down to atomic dimensions. While on-surface tip-tuned molecular switches have recently been widely studied, atomic switches have received much less attention despite the fact that they could, in addition to the size, reduce also the switching times by orders of magnitude by tuning directly their electronic, rather than atomic states. We have studied an ultra-fast tip-tuned conductance switch which can switch reversibly and repeatably by ap- plied bias. The switch is realized by an oxygen adatom supported on rutile TiO2 surface whose redox state can be switched between -1, -2, or 0, the former being conducting, the latter two nonconducting. Advanced simulations suggest that for virtually identical current-bias traces several mechanisms, such as discharge/recharge via a state of a nearby polaron or via a highly energetically unfavorable neutral redox state are involved.

Original language	English
Journal	Journal Of Physical Chemistry C
Publication status	Accepted/In press - 2 Nov 2021

Cite this

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title = "Voltage and Redox State Triggered Oxygen Adatom Conductance Switch",

abstract = "Switches are omnipresent in all electronic de- vices. Miniaturization reduced the size of switches down to atomic dimensions. While on-surface tip-tuned molecular switches have recently been widely studied, atomic switches have received much less attention despite the fact that they could, in addition to the size, reduce also the switching times by orders of magnitude by tuning directly their electronic, rather than atomic states. We have studied an ultra-fast tip-tuned conductance switch which can switch reversibly and repeatably by ap- plied bias. The switch is realized by an oxygen adatom supported on rutile TiO2 surface whose redox state can be switched between -1, -2, or 0, the former being conducting, the latter two nonconducting. Advanced simulations suggest that for virtually identical current-bias traces several mechanisms, such as discharge/recharge via a state of a nearby polaron or via a highly energetically unfavorable neutral redox state are involved.",

author = "Quanzhen Zhang and J. Brndiar and Yuuki Adachi and Martin Konopka and Wen, {Huan Fei} and Masato Miyazaki and Yasuhiro Sugawara and Rui Xu and Cheng, {Zhi Hai} and Hongqian Sang and Li, {Yan Jun} and Lev Kantorovich and Ivan Stich",

year = "2021",

month = nov,

day = "2",

language = "English",

journal = "Journal Of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Voltage and Redox State Triggered Oxygen Adatom Conductance Switch

AU - Zhang, Quanzhen

AU - Brndiar, J.

AU - Adachi, Yuuki

AU - Konopka, Martin

AU - Wen, Huan Fei

AU - Miyazaki, Masato

AU - Sugawara, Yasuhiro

AU - Xu, Rui

AU - Cheng, Zhi Hai

AU - Sang, Hongqian

AU - Li, Yan Jun

AU - Kantorovich, Lev

AU - Stich, Ivan

PY - 2021/11/2

Y1 - 2021/11/2

N2 - Switches are omnipresent in all electronic de- vices. Miniaturization reduced the size of switches down to atomic dimensions. While on-surface tip-tuned molecular switches have recently been widely studied, atomic switches have received much less attention despite the fact that they could, in addition to the size, reduce also the switching times by orders of magnitude by tuning directly their electronic, rather than atomic states. We have studied an ultra-fast tip-tuned conductance switch which can switch reversibly and repeatably by ap- plied bias. The switch is realized by an oxygen adatom supported on rutile TiO2 surface whose redox state can be switched between -1, -2, or 0, the former being conducting, the latter two nonconducting. Advanced simulations suggest that for virtually identical current-bias traces several mechanisms, such as discharge/recharge via a state of a nearby polaron or via a highly energetically unfavorable neutral redox state are involved.

AB - Switches are omnipresent in all electronic de- vices. Miniaturization reduced the size of switches down to atomic dimensions. While on-surface tip-tuned molecular switches have recently been widely studied, atomic switches have received much less attention despite the fact that they could, in addition to the size, reduce also the switching times by orders of magnitude by tuning directly their electronic, rather than atomic states. We have studied an ultra-fast tip-tuned conductance switch which can switch reversibly and repeatably by ap- plied bias. The switch is realized by an oxygen adatom supported on rutile TiO2 surface whose redox state can be switched between -1, -2, or 0, the former being conducting, the latter two nonconducting. Advanced simulations suggest that for virtually identical current-bias traces several mechanisms, such as discharge/recharge via a state of a nearby polaron or via a highly energetically unfavorable neutral redox state are involved.

M3 - Article

SN - 1932-7447

JO - Journal Of Physical Chemistry C

JF - Journal Of Physical Chemistry C

ER -

Voltage and Redox State Triggered Oxygen Adatom Conductance Switch

Abstract

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