BROWSE

Related Scientist

CALDES's photo.

CALDES
원자제어 저차원 전자계 연구단
more info

ITEM VIEW & DOWNLOAD

Twisted van der Waals Josephson Junction Based on a High- TcSuperconductor

Cited 0 time in webofscience Cited 0 time in scopus
9 Viewed 0 Downloaded
Title
Twisted van der Waals Josephson Junction Based on a High- TcSuperconductor
Author(s)
Lee, Jongyun; Lee, Wonjun; Kim, Gi-Yeop; Choi, Yong-Bin; Park, Jinho; Jang, Seong; Gu, Genda; Choi, Si-Young; Gil Young Cho; Lee, Gil-Ho; Lee, Hu-Jong
Publication Date
2021-12-22
Journal
Nano Letters, v.21, no.24, pp.10469 - 10477
Publisher
American Chemical Society
Abstract
© 2021 American Chemical Society.Stacking two-dimensional van der Waals (vdW) materials rotated with respect to each other show versatility for studying exotic quantum phenomena. In particular, anisotropic layered materials have great potential for such twistronics applications, providing high tunability. Here, we report anisotropic superconducting order parameters in twisted Bi2Sr2CaCu2O8+x (Bi-2212) vdW junctions with an atomically clean vdW interface, achieved using the microcleave-and-stack technique. The vdW junctions with twist angles of 0° and 90° showed the maximum Josephson coupling, comparable to that of intrinsic Josephson junctions. As the twist angle approaches 45°, Josephson coupling is suppressed, and eventually disappears at 45°. The observed twist angle dependence of the Josephson coupling can be explained quantitatively by theoretical calculation with the d-wave superconducting order parameter of Bi-2212 and finite tunneling incoherence of the junction. Our results revealed the anisotropic nature of Bi-2212 and provided a novel fabrication technique for vdW-based twistronics platforms compatible with air-sensitive vdW materials.
URI
https://pr.ibs.re.kr/handle/8788114/10987
DOI
10.1021/acs.nanolett.1c03906
ISSN
1530-6984
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse