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Nematically Templated Vortex Lattices in Superconducting FeSe.
Sang Yong Song1, Chengyun Hua2, Luke Bell3
1Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Nano Letters
|March 20, 2023
Summary
Researchers discovered that nematic twin boundaries control superconducting vortices, enabling new pathways for vortex-based computing. This finding allows for precise manipulation of vortex lattices for topological quantum computing architectures.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Computing
Background:
- Superconducting vortex lattices are crucial for potential computing platforms.
- Controlling vortex morphology and dynamics is essential for scaling these technologies.
Purpose of the Study:
- To explore new methods for controlling superconducting vortex lattice morphology and dynamics.
- To investigate the role of nematic twin boundaries in vortex lattice alignment and structural phases.
Main Methods:
- Observation of superconducting vortices interacting with nematic twin boundaries.
- Analysis of vortex lattice structural phases (square, regular, irregular 1D).
- Vortex lattice modeling to infer boundary energetics and predict size effects.
Main Results:
- Nematic twin boundaries align superconducting vortices via incommensurate potentials.
- Varying twin boundary density and morphology leads to distinct vortex lattice phases.
- Inferred boundary energetics and predicted geometric size effects due to confinement.
Conclusions:
- Directed control of vortex lattices is achievable using intrinsic topological defects.
- Findings have direct implications for designing and controlling strain-based topological quantum computing architectures.
Keywords:
FeSeLangevin dynamics simulationscanning tunneling microscopetemplated vortex latticetwin boundaryvortexMore Related Videos
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