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Manipulating Majorana zero modes on atomic rings with an external magnetic field

Author

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  • Jian Li

    (Princeton University)

  • Titus Neupert

    (Princeton Center for Theoretical Science, Princeton University)

  • B. Andrei Bernevig

    (Princeton University)

  • Ali Yazdani

    (Princeton University)

Abstract

Non-Abelian quasiparticles have been predicted to exist in a variety of condensed matter systems. Their defining property is that an adiabatic braid between two of them results in a non-trivial change of the quantum state of the system. The simplest non-Abelian quasiparticles—the Majorana bound states—can occur in one-dimensional electronic nano-structures proximity-coupled to a bulk superconductor. Here we propose a set-up, based on chains of magnetic adatoms on the surface of a thin-film superconductor, in which the control over an externally applied magnetic field suffices to create and manipulate Majorana bound states. We consider specifically rings of adatoms and show that they allow for the creation, annihilation, adiabatic motion and braiding of pairs of Majorana bound states by varying the magnitude and orientation of the external magnetic field.

Suggested Citation

  • Jian Li & Titus Neupert & B. Andrei Bernevig & Ali Yazdani, 2016. "Manipulating Majorana zero modes on atomic rings with an external magnetic field," Nature Communications, Nature, vol. 7(1), pages 1-6, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10395
    DOI: 10.1038/ncomms10395
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