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Creating Majorana modes from segmented Fermi surface.

Michał Papaj1, Liang Fu2

  • 1Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. mpapaj@mit.edu.

Nature Communications
|January 26, 2021
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Summary
This summary is machine-generated.

This study introduces a novel platform for creating Majorana bound states using 2D superconducting states. This new system offers significant advantages for quantum computation and fundamental physics research.

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Area of Science:

  • Condensed Matter Physics
  • Quantum Computing

Background:

  • Majorana bound states are crucial for fundamental physics and quantum computation.
  • Existing Majorana platforms face challenges hindering their full potential.

Purpose of the Study:

  • To present a new platform for generating Majorana bound states.
  • To overcome limitations of current Majorana systems.

Main Methods:

  • Utilizing a 2D gapless superconducting state in spin-helical systems.
  • Applying in-plane magnetic or Zeeman fields.
  • Forming topological 1D channels via quantum confinement and Andreev reflection.

Main Results:

  • Demonstrated a method to create Majorana bound states.
  • Proposed realization using magnetic insulators on 3D topological insulators.
  • Achieved key advantages: small fields, no chemical potential tuning, removal of detrimental states, and a large topological gap.

Conclusions:

  • The proposed platform offers a promising route for advancing Majorana bound state research.
  • This system has significant implications for the development of robust quantum computing.