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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Supercurrent Induced by Chiral Coupling in Multiferroic/Superconductor Nanostructures
Bjoern Niedzielski1, Chenglong Jia2, Jamal Berakdar1
1Institut für Physik, Martin-Luther Universität Halle-Wittenberg, 06099 Halle (Saale), Germany.
Nanomaterials (Basel, Switzerland)
|January 16, 2021
Summary
This study explores controlling superconductor vortices using a magnetic top layer. Researchers demonstrate how spin helicity can manipulate vortex behavior in superconducting materials.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Investigating type II superconductors (SC) with novel heterostructures.
- Understanding proximity effects between magnetic and superconducting layers.
- Exploring spin-current-driven ferroelectric polarization.
Purpose of the Study:
- To study the transport and superconducting dynamics in a type II SC with a normal, magnetically ordered top layer.
- To investigate how proximity effects influence supercurrent transport and vortex dynamics.
- To demonstrate the control of vortices using the spin helicity of the top layer.
Main Methods:
- Utilizing the time-dependent Ginzburg-Landau approach.
- Modeling heterostructures with type II superconductors and magnetically ordered layers.
- Analyzing anisotropic supercurrent transport and vortex behavior.
Main Results:
- Proximity effects lead to anisotropic supercurrent transport.
- Vortex dynamics in the SC are modified by the magnetic top layer.
- Spin helicity in the top layer enables control over vortex pinning and guiding.
Conclusions:
- The spin helicity of the top layer can be leveraged to manipulate superconducting vortices.
- Electric gating and other coupling methods can control vortex behavior.
- This research offers pathways for novel superconducting device applications.
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