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Title: Observation of half-quantum flux in the unconventional superconductor β-Bi 2 Pd

Abstract

Magnetic flux quantization is one of the defining properties of a superconductor. We report the observation of half-integer magnetic flux quantization in mesoscopic rings of superconducting β-Bi 2 Pd thin films. The half-quantum fluxoid manifests itself as a π phase shift in the quantum oscillation of the superconducting critical temperature. This result verifies unconventional superconductivity of β-Bi 2 Pd and is consistent with a spin-triplet pairing symmetry. Our findings may have implications for flux quantum bits in the context of quantum computing.

Authors:
ORCiD logo; ORCiD logo; ; ; ORCiD logo
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1570502
Grant/Contract Number:  
DESC0009390; No. SC0012670
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 366 Journal Issue: 6462; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English

Citation Formats

Li, Yufan, Xu, Xiaoying, Lee, M. -H., Chu, M. -W., and Chien, C. L. Observation of half-quantum flux in the unconventional superconductor β-Bi 2 Pd. United States: N. p., 2019. Web. doi:10.1126/science.aau6539.
Li, Yufan, Xu, Xiaoying, Lee, M. -H., Chu, M. -W., & Chien, C. L. Observation of half-quantum flux in the unconventional superconductor β-Bi 2 Pd. United States. doi:10.1126/science.aau6539.
Li, Yufan, Xu, Xiaoying, Lee, M. -H., Chu, M. -W., and Chien, C. L. Thu . "Observation of half-quantum flux in the unconventional superconductor β-Bi 2 Pd". United States. doi:10.1126/science.aau6539.
@article{osti_1570502,
title = {Observation of half-quantum flux in the unconventional superconductor β-Bi 2 Pd},
author = {Li, Yufan and Xu, Xiaoying and Lee, M. -H. and Chu, M. -W. and Chien, C. L.},
abstractNote = {Magnetic flux quantization is one of the defining properties of a superconductor. We report the observation of half-integer magnetic flux quantization in mesoscopic rings of superconducting β-Bi 2 Pd thin films. The half-quantum fluxoid manifests itself as a π phase shift in the quantum oscillation of the superconducting critical temperature. This result verifies unconventional superconductivity of β-Bi 2 Pd and is consistent with a spin-triplet pairing symmetry. Our findings may have implications for flux quantum bits in the context of quantum computing.},
doi = {10.1126/science.aau6539},
journal = {Science},
number = 6462,
volume = 366,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aau6539

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