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Topological Zero Modes and Correlation Pumping in an Engineered Kondo Lattice
Zina Lippo1, Elizabeth Louis Pereira2, Jose L Lado2
1University of Helsinki, Department of Physics, 00560 Helsinki, Finland.
Physical Review Letters
|April 7, 2025
Summary
We engineered a one-dimensional Kondo lattice exhibiting topological excitations driven by many-body physics. This work highlights quantum magnetism
Area of Science:
- Condensed Matter Physics
- Quantum Materials Science
- Topological Matter
Background:
- Topological phases of matter offer unique quantum excitations.
- Many-body correlations can drive non-trivial topology in quantum systems.
Purpose of the Study:
- To propose and investigate a one-dimensional engineered Kondo lattice for topological excitations.
- To explore the role of collective many-body Kondo physics in generating topological properties.
Main Methods:
- Tensor network simulations to solve the interacting model and identify topological zero modes.
- Analysis of the periodic Anderson model and mapping to a non-Hermitian model.
- Correlation matrix pumping method for computing topological invariants directly from quantum many-body wave functions.
Main Results:
- Demonstrated the existence and robustness against disorder of topological zero modes in the engineered Kondo lattice.
- Rationalized the origin of topological zero modes by mapping to a non-Hermitian model.
- Successfully computed the topological invariant using a correlation matrix pumping method.
Conclusions:
- Established a strategy for engineering topological Kondo insulators.
- Highlighted quantum magnetism as a key mechanism for creating topological matter.
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