Evidence for singular-phonon-induced nematic superconductivity in a topological superconductor candidate Sr0.1Bi2Se3

Jinghui Wang; Kejing Ran; Shichao Li; Zhen Ma; Song Bao; Zhengwei Cai; Youtian Zhang; Kenji Nakajima; Seiko Ohira-Kawamura; P. Čermák; A. Schneidewind; Sergey Y. Savrasov; Xiangang Wan; Jinsheng Wen

doi:10.1038/s41467-019-10942-2

Nature Communications (Jun 2019)

Evidence for singular-phonon-induced nematic superconductivity in a topological superconductor candidate Sr0.1Bi2Se3

Jinghui Wang,
Kejing Ran,
Shichao Li,
Zhen Ma,
Song Bao,
Zhengwei Cai,
Youtian Zhang,
Kenji Nakajima,
Seiko Ohira-Kawamura,
P. Čermák,
A. Schneidewind,
Sergey Y. Savrasov,
Xiangang Wan,
Jinsheng Wen

Affiliations

Jinghui Wang: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Kejing Ran: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Shichao Li: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Zhen Ma: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Song Bao: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Zhengwei Cai: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Youtian Zhang: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Kenji Nakajima: J-PARC Center, Japan Atomic Energy Agency
Seiko Ohira-Kawamura: J-PARC Center, Japan Atomic Energy Agency
P. Čermák: Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH
A. Schneidewind: Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH
Sergey Y. Savrasov: Department of Physics, University of California
Xiangang Wan: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University
Jinsheng Wen: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University

DOI: https://doi.org/10.1038/s41467-019-10942-2
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 6

Abstract

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Superconductivity mediated by phonons is usually conventional due to isotropic electron-phonon coupling. Here, Wang et al. report highly anisotropic phonons only along [001] direction in Sr0.1Bi2Se3, indicating a singular electron-phonon coupling which favors a p-wave nematic superconductivity scenario.

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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