Quantum oscillations and a nontrivial Berry phase in the noncentrosymmetric topological superconductor candidate BiPd

Khan, Mojammel A.; Graf, D. E.; Vekhter, I.; Browne, D. A.; DiTusa, J. F.; Phelan, W. Adam; Young, D. P.

doi:10.1103/physrevb.99.020507

Title: Quantum oscillations and a nontrivial Berry phase in the noncentrosymmetric topological superconductor candidate BiPd

Journal Article · 28 January 2019 · Physical Review B

DOI: https://doi.org/10.1103/physrevb.99.020507 · OSTI ID:1611797

Khan, Mojammel A. ^[1]; Graf, D. E. ^[2]; Vekhter, I. ^[3]; Browne, D. A. ^[3]; DiTusa, J. F. ^[3]; Phelan, W. Adam ^[4]; Young, D. P. ^[3]

Louisiana State University, Baton Rouge, LA (United States); DOE/OSTI
National High Magnetic Field Laboratory, Tallahassee, FL (United States)
Louisiana State University, Baton Rouge, LA (United States)
Louisiana State University, Baton Rouge, LA (United States); Johns Hopkins University, Baltimore, MD (United States)

Here, we report the measurements of de Haas-van Alphen (dHvA) oscillations in the noncentrosymmetric superconductor BiPd. Several pieces of a complex multisheet Fermi surface are identified, including a small pocket (α ~ 40 T) which is three dimensional and anisotropic. From the temperature dependence of the amplitude of the oscillations, the cyclotron effective mass is (0.18 ± 0.02) m_e. Further analysis revealed a nontrivial π-Berry phase is associated with the 40 T pocket, which strongly supports the presence of topological states in bulk BiPd.

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Research Organization:: Louisiana State Univ., Baton Rouge, LA (United States); Louisiana State University, Baton Rouge, LA (United States)

Sponsoring Organization:: NSF; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012432

OSTI ID:: 1611797

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 2 Vol. 99; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Fermi surface, possible unconventional fermions, and unusually robust resistive critical fields in the chiral-structured superconductor AuBe Rebar, Drew J.; Birnbaum, Serena M.; Singleton, John arXiv https://doi.org/10.48550/arxiv.1812.02830	text	January 2018

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Title: Quantum oscillations and a nontrivial Berry phase in the noncentrosymmetric topological superconductor candidate BiPd

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