Prof. Dr. Rolf W. Lortz (Hong Kong U of S&T): Uncovering the secrets of unconventional and topological superconductors

Topological superconductors have garnered significant attention due to the anticipated emergence of Majorana zero modes, a unique type of quasiparticle. These modes are particularly intriguing for their potential application in the development of fault-tolerant topological qubits for quantum computing. In this colloquium, I will present several promising material platforms for the exploration of Majorana zero modes, with a focus on the examples of the Ising superconductor NbSe2, Bi2Te3/FeTe heterostructures, quantum anomalous Hall insulator/superconductor and magnet / superconductor heterostructures. In each case, we discuss the experimental evidence and potential implications for the realization of Majorana zero modes. We also explore the challenges and opportunities associated with harnessing these modes for quantum computational applications, for example in the form of narrow nanoribbons of more complex nanostructures formed by these materials.
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