Directly visualizing the sign change of d-wave superconducting gap in Bi2Sr2CaCu2O8+δ by phase-referenced quasiparticle interference

Qiangqiang Gu; Siyuan Wan; Qingkun Tang; Zengyi Du; Huan Yang; Qiang-Hua Wang; Ruidan Zhong; Jinsheng Wen; G. D. Gu; Hai-Hu Wen

doi:10.1038/s41467-019-09340-5

Nature Communications (Apr 2019)

Directly visualizing the sign change of d-wave superconducting gap in Bi2Sr2CaCu2O8+δ by phase-referenced quasiparticle interference

Qiangqiang Gu,
Siyuan Wan,
Qingkun Tang,
Zengyi Du,
Huan Yang,
Qiang-Hua Wang,
Ruidan Zhong,
Jinsheng Wen,
G. D. Gu,
Hai-Hu Wen

Affiliations

Qiangqiang Gu: National Laboratory of Solid State Microstructures and Department of Physics, Center for Superconducting Physics and Materials, Collaborative Innovation Center for Advanced Microstructures, Nanjing University
Siyuan Wan: National Laboratory of Solid State Microstructures and Department of Physics, Center for Superconducting Physics and Materials, Collaborative Innovation Center for Advanced Microstructures, Nanjing University
Qingkun Tang: National Laboratory of Solid State Microstructures and Department of Physics, Center for Superconducting Physics and Materials, Collaborative Innovation Center for Advanced Microstructures, Nanjing University
Zengyi Du: National Laboratory of Solid State Microstructures and Department of Physics, Center for Superconducting Physics and Materials, Collaborative Innovation Center for Advanced Microstructures, Nanjing University
Huan Yang: National Laboratory of Solid State Microstructures and Department of Physics, Center for Superconducting Physics and Materials, Collaborative Innovation Center for Advanced Microstructures, Nanjing University
Qiang-Hua Wang: National Laboratory of Solid State Microstructures and Department of Physics, Center for Superconducting Physics and Materials, Collaborative Innovation Center for Advanced Microstructures, Nanjing University
Ruidan Zhong: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton
Jinsheng Wen: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton
G. D. Gu: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton
Hai-Hu Wen: National Laboratory of Solid State Microstructures and Department of Physics, Center for Superconducting Physics and Materials, Collaborative Innovation Center for Advanced Microstructures, Nanjing University

DOI: https://doi.org/10.1038/s41467-019-09340-5
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 10

Abstract

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The superconducting gap structure contains important information to understand the pairing mechanism of unconventional superconductivity. Here, by using a newly established phase-referenced quasiparticle interference technique, the authors visualize the sign change of the d-wave superconducting gap directly in Bi2Sr2CaCu2O8+δ.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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