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Heat and Charge Transport in a Semiconductor Nanowire with Induced Superconductivity

Student: Elena Shpagina

Supervisor: Vadim Khrapai

Faculty: Faculty of Physics

Educational Programme: Physics (Master)

Year of Graduation: 2021

Here investigate diffusive nanoire-based structures with two normal terminals on the sides and a central superconducting island in the middle, which is floating. Using a semiclassical calculation we demonstrate that layouts permit a quantitative measurement of the energy-dependent sub-gap thermal conductance Gth from the spectral density of the current noise. This goal is achieved without the need to contact the superconductor provided the device is asymmetric, that may be attractive from the experimental point of view. In addition, we predict that the shot noise is sensitive to a non-equilibrium suppression of the superconductivity in the general floating case.

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