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:
-
[1];
[1];
[3]
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA.
- Center for Condensed Matter Sciences and Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 10617, Taiwan.
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA., Institute of Physics, Academia Sinica, Taipei 11519, Taiwan., Department of Physics, National Taiwan University, Taipei 10617, Taiwan.
- 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}
}
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DOI: 10.1126/science.aau6539
DOI: 10.1126/science.aau6539
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