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A glance at edge modes

10 Jun 2024

An international team from LMU and the Max-Planck Institute for Quantum Optics now observed and manipulated the peculiar states emerging at topological boundaries.

Topological materials, in contrast to "ordinary" materials host edge modes which enable dissipation-free transport along the system's boundary. The transport enabled by the edge mode is robust to imperfections of the crystal and small variations of the system parameters - it is topologically protected. This protection of the edge mode is intriguing, as small variations in the system do not alter the conductance of the edge mode, a phenomenon famously observed in the quantum Hall effect and used in the redefinition of the International System of Units (SI) units in 2019.

An international team from LMU and the Max-Planck Institute for Quantum Optics recently observed and manipulated the peculiar states emerging at topological boundaries, the so-called edge modes. The results are featured in Nature Physics.

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