File(s) under embargo

Reason: Publisher requirement

242

days

7

hours

until file(s) become available

A selective control of volatile and non-volatile superconductivity in an insulating copper oxide via ionic liquid gating

journal contribution
posted on 14.09.2020 by Xinjian Wei, Hao-Bo Li, Qinghua Zhang, Dong Li, Mingyang Qin, Li Xu, Wei Hu, Qing Huan, Li Yu, Jun Miao, Jie Yuan, Beiyi Zhu, Anna Kusmartseva, Feodor Kusmartsev, Alejandro V. Silhanek, Tao Xiang, Weiqiang Yu, Yuan Lin, Lin Gu, Pu Yu, Qihong Chen, Kui Jin
© 2020 Science China Press Manipulating the superconducting states of high transition temperature (high-Tc) cuprate superconductors in an efficient and reliable way is of great importance for their applications in next-generation electronics. Here, employing ionic liquid gating, a selective control of volatile and non-volatile superconductivity is achieved in pristine insulating Pr2CuO4±δ (PCO) films, based on two distinct mechanisms. Firstly, with positive electric fields, the film can be reversibly switched between superconducting and non-superconducting states, attributed to the carrier doping effect. Secondly, the film becomes more resistive by applying negative bias voltage up to − 4 V, but strikingly, a non-volatile superconductivity is achieved once the gate voltage is removed. Such phenomenon represents a distinctive route of manipulating superconductivity in PCO, resulting from the doping healing of oxygen vacancies in copper-oxygen planes as unravelled by high-resolution scanning transmission electron microscope and in situ X-ray diffraction experiments. The effective manipulation of volatile/non-volatile superconductivity in the same parent cuprate brings more functionalities to superconducting electronics, as well as supplies flexible samples for investigating the nature of quantum phase transitions in high-Tc superconductors.

Funding

National Key Basic Research Program of China (2015CB921000, 2016YFA0300301, 2017YFA0302902, 2017YFA0303003 and 2018YFB0704102)

National Natural Science Foundation of China (11674374 and 11834016)

Strategic Priority Research Program of Chinese Academy of Sciences (XDB25000000)

Key Research Program of Frontier Sciences, CAS (QYZDB-SSW-SLH008 and QYZDY-SSWSLH001)

History

School

  • Science

Department

  • Physics

Published in

Science Bulletin

Volume

65

Issue

19

Pages

1607 - 1613

Publisher

Elsievier

Version

AM (Accepted Manuscript)

Rights holder

© 2020 Science China Press

Publisher statement

This paper was accepted for publication in the journal Science Bulletin and the definitive published version is available at https://doi.org/10.1016/j.scib.2020.05.013

Acceptance date

14/05/2020

Publication date

2020-05-19

Copyright date

2020

ISSN

2095-9273

eISSN

2095-9281

Language

en

Depositor

Dr Anna Kusmartseva. Deposit date: 9 September 2020

Exports