Prominent Josephson tunneling between twisted single copper oxide planes of Bi2Sr2-xLaxCuO6+y

Heng Wang, Yuying Zhu (), Zhonghua Bai, Zechao Wang, Shuxu Hu, Hong-Yi Xie, Xiaopeng Hu, Jian Cui, Miaoling Huang, Jianhao Chen, Ying Ding, Lin Zhao, Xinyan Li, Qinghua Zhang, Lin Gu, X. J. Zhou, Jing Zhu, Ding Zhang () and Qi-Kun Xue ()
Additional contact information
Heng Wang: Tsinghua University
Yuying Zhu: Beijing Academy of Quantum Information Sciences
Zhonghua Bai: Tsinghua University
Zechao Wang: Tsinghua University
Shuxu Hu: Tsinghua University
Hong-Yi Xie: Beijing Academy of Quantum Information Sciences
Xiaopeng Hu: Tsinghua University
Jian Cui: Beijing Academy of Quantum Information Sciences
Miaoling Huang: Beijing Academy of Quantum Information Sciences
Jianhao Chen: Beijing Academy of Quantum Information Sciences
Ying Ding: Chinese Academy of Sciences
Lin Zhao: Chinese Academy of Sciences
Xinyan Li: Chinese Academy of Sciences
Qinghua Zhang: Chinese Academy of Sciences
Lin Gu: Tsinghua University
X. J. Zhou: Chinese Academy of Sciences
Jing Zhu: Tsinghua University
Ding Zhang: Tsinghua University
Qi-Kun Xue: Tsinghua University

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Josephson tunneling in twisted cuprate junctions provides a litmus test for the pairing symmetry, which is fundamental for understanding the microscopic mechanism of high temperature superconductivity. This issue is rekindled by experimental advances in van der Waals stacking and the proposal of an emergent d+id-wave. So far, all experiments have been carried out on Bi2Sr2CaCu2O8+x (Bi-2212) with double CuO2 planes but show controversial results. Here, we investigate junctions made of Bi2Sr2-xLaxCuO6+y (Bi-2201) with single CuO2 planes. Our on-site cold stacking technique ensures uncompromised crystalline quality and stoichiometry at the interface. Junctions with carefully calibrated twist angles around 45° show strong Josephson tunneling and conventional temperature dependence. Furthermore, we observe standard Fraunhofer diffraction patterns and integer Fiske steps in a junction with a twist angle of 45.0±0.2°. Together, these results pose strong constraints on the d or d+id-wave pairing and suggest an indispensable isotropic pairing component.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-40525-1 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40525-1

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-40525-1

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().