Gate-tunable two-dimensional superconductivity revealed in flexible wafer-scale hybrid structures

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xiaowen Han
  • Min Gao
  • Yufeng Wu
  • Gang Mu
  • Miao Zhang
  • Yongfeng Mei
  • Xiaoming Xie
  • Tao Hu
  • Zengfeng Di

Detail(s)

Original languageEnglish
Pages (from-to)14605-14610
Journal / PublicationJournal of Materials Chemistry C
Volume8
Issue number41
Online published4 Oct 2020
Publication statusPublished - 7 Nov 2020

Abstract

Superconducting devices such as superconducting quantum interference devices, superconductor nanowire single photon detectors, and superconducting quantum chips have unique performances not available in conventional semiconductor devices. However, most of the superconducting devices are fabricated on rigid substrates consequently limiting applications requiring mechanical flexibility. Herein, wafer-scale flexible superconducting devices are designed and constructed based on a two-dimensional (2D) superconducting system consisting of superconducting discrete Pb nano-islands and single-crystalline graphene on a stretchable parylene C substrate. Owing to the perfect two-dimensional electron gas (2DEG) provided by single-crystalline graphene, the discrete Pb nano-islands are coupled to form a global zero-resistance superconducting state in the hybrid system. Since the discrete island structure is integrated with flexible graphene and parylene C, the superconducting device works steadily even in the bent state. In addition, the Berezinskii-Kosterlitz-Thouless (BKT) type phase transition, the hallmark of two-dimensional superconductivity, can be tuned by the back-gate bias. Our results suggest a convenient and effective strategy to design and prepare large-scale and flexible superconducting systems. This journal is

Citation Format(s)

Gate-tunable two-dimensional superconductivity revealed in flexible wafer-scale hybrid structures. / Han, Xiaowen; Gao, Min; Wu, Yufeng; Mu, Gang; Zhang, Miao; Mei, Yongfeng; Chu, Paul K.; Xie, Xiaoming; Hu, Tao; Di, Zengfeng.

In: Journal of Materials Chemistry C, Vol. 8, No. 41, 07.11.2020, p. 14605-14610.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review